configure: Move enabling libc_type into probe_libc() function
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
191   --enable-libcdio           audio CD input
192   --enable-libdc1394         IEEE 1394/Firewire camera input
193   --enable-libdcadec         DCA audio decoding
194   --enable-libfaac           AAC audio encoding
195   --enable-libfdk-aac        AAC audio encoding/decoding
196   --enable-libfontconfig     font configuration and management
197   --enable-libfreetype       font rendering
198   --enable-libgsm            GSM audio encoding/decoding
199   --enable-libhdcd           HDCD decoding filter
200   --enable-libilbc           ILBC audio encoding/decoding
201   --enable-libjack           JACK audio sound server
202   --enable-libkvazaar        HEVC video encoding
203   --enable-libmp3lame        MP3 audio encoding
204   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
205   --enable-libopencore-amrwb AMR-WB audio decoding
206   --enable-libopencv         computer vision
207   --enable-libopenh264       H.264 video encoding/decoding
208   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
209   --enable-libopus           Opus audio encoding/decoding
210   --enable-libpulse          Pulseaudio sound server
211   --enable-librtmp           RTMP streaming
212   --enable-libschroedinger   Dirac video encoding/decoding
213   --enable-libsnappy         snappy compression
214   --enable-libspeex          Speex audio encoding/decoding
215   --enable-libtheora         Theora video encoding/decoding
216   --enable-libtwolame        MP2 audio encoding
217   --enable-libvo-aacenc      AAC audio encoding
218   --enable-libvo-amrwbenc    AMR-WB audio encoding
219   --enable-libvorbis         Vorbis audio encoding/decoding
220   --enable-libvpx            VP* video encoding/decoding
221   --enable-libwavpack        Wavpack audio encoding/decoding
222   --enable-libwebp           WebP image encoding/decoding
223   --enable-libx264           H.264 video encoding
224   --enable-libx265           HEVC video encoding
225   --enable-libxavs           Chinese AVS video encoding
226   --enable-libxcb            X window system protocol communication
227   --enable-libxcb-shm        X11 shm communication [auto]
228   --enable-libxcb-xfixes     X11 mouse rendering [auto]
229   --enable-libxvid           MPEG-4 ASP video encoding
230   --enable-openssl           crypto
231   --enable-zlib              compression [autodetect]
232
233   The following libraries provide various hardware acceleration features:
234   --enable-cuda    Nvidia CUDA (dynamically linked)
235   --enable-cuvid   Nvidia CUVID video decode acceleration
236   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
237   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
238   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
239   --enable-libnpp  Nvidia CUDA processing
240   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
241   --enable-nvenc   Nvidia video encoding
242   --enable-omx     OpenMAX IL
243   --enable-omx-rpi OpenMAX IL for Raspberry Pi
244   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
245   --enable-vda     Apple Video Decode Acceleration [auto]
246   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
247
248 Toolchain options:
249   --arch=ARCH              select architecture [$arch]
250   --cpu=CPU                select the minimum required CPU (affects
251                            instruction selection, may crash on older CPUs)
252   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
253   --enable-cross-compile   assume a cross-compiler is used
254   --sysroot=PATH           root of cross-build tree
255   --sysinclude=PATH        location of cross-build system headers
256   --target-os=OS           compiler targets OS [$target_os]
257   --target-exec=CMD        command to run executables on target
258   --target-path=DIR        path to view of build directory on target
259   --target-samples=DIR     path to samples directory on target
260   --toolchain=NAME         set tool defaults according to NAME
261   --nm=NM                  use nm tool
262   --ar=AR                  use archive tool AR [$ar_default]
263   --as=AS                  use assembler AS [$as_default]
264   --cc=CC                  use C compiler CC [$cc_default]
265   --objcc=OCC              use ObjC compiler OCC [$cc_default]
266   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
267   --ld=LD                  use linker LD
268   --x86asmexe=X86ASM       use x86 assembler X86ASM
269   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
270   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
271   --host-cc=HOSTCC         use host C compiler HOSTCC
272   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
273   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
274   --host-ld=HOSTLD         use host linker HOSTLD
275   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
276   --host-libs=HLIBS        use libs HLIBS when linking for host
277   --host-os=OS             compiler host OS [$target_os]
278   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
279   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
280   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
281   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
282   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --enable-pic             build position-independent code
287   --enable-thumb           compile for Thumb instruction set
288   --enable-lto             use link-time optimization
289   --env="ENV=override"     override the environment variables
290
291 Advanced options (experts only):
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --custom-allocator=NAME  use a supported custom allocator
294   --disable-symver         disable symbol versioning
295   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
296   --disable-safe-bitstream-reader
297                            disable buffer boundary checking in bitreaders
298                            (faster, but may crash)
299   --enable-sram            allow use of on-chip SRAM
300
301 Optimization options (experts only):
302   --disable-asm            disable all assembly optimizations
303   --disable-altivec        disable AltiVec optimizations
304   --disable-vsx            disable VSX optimizations
305   --disable-power8         disable POWER8 optimizations
306   --disable-amd3dnow       disable 3DNow! optimizations
307   --disable-amd3dnowext    disable 3DNow! extended optimizations
308   --disable-mmx            disable MMX optimizations
309   --disable-mmxext         disable MMXEXT optimizations
310   --disable-sse            disable SSE optimizations
311   --disable-sse2           disable SSE2 optimizations
312   --disable-sse3           disable SSE3 optimizations
313   --disable-ssse3          disable SSSE3 optimizations
314   --disable-sse4           disable SSE4 optimizations
315   --disable-sse42          disable SSE4.2 optimizations
316   --disable-avx            disable AVX optimizations
317   --disable-xop            disable XOP optimizations
318   --disable-fma3           disable FMA3 optimizations
319   --disable-fma4           disable FMA4 optimizations
320   --disable-avx2           disable AVX2 optimizations
321   --disable-armv5te        disable armv5te optimizations
322   --disable-armv6          disable armv6 optimizations
323   --disable-armv6t2        disable armv6t2 optimizations
324   --disable-vfp            disable VFP optimizations
325   --disable-neon           disable NEON optimizations
326   --disable-inline-asm     disable use of inline assembly
327   --disable-x86asm         disable use of standalone x86 assembly
328
329 Developer options (useful when working on Libav itself):
330   --disable-debug          disable debugging symbols
331   --enable-debug=LEVEL     set the debug level [$debuglevel]
332   --disable-optimizations  disable compiler optimizations
333   --enable-extra-warnings  enable more compiler warnings
334   --samples=PATH           location of test samples for FATE, if not set use
335                            \$LIBAV_SAMPLES at make invocation time.
336   --enable-neon-clobber-test check NEON registers for clobbering (should be
337                            used only for debugging purposes)
338   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
339                            should be used only for debugging purposes)
340   --disable-valgrind-backtrace do not print a backtrace under Valgrind
341                            (only applies to --disable-optimizations builds)
342   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
343                            in the name) of tests whose result is ignored
344
345 NOTE: Object files are built at the place where configure is launched.
346 EOF
347   exit 0
348 }
349
350 quotes='""'
351
352 log(){
353     echo "$@" >> $logfile
354 }
355
356 log_file(){
357     log BEGIN $1
358     i=1
359     while read line; do
360         printf '%5s   %s\n' "${i}" "${line}"
361         i=$(($i+1))
362     done < $1 >> $logfile
363     log END $1
364 }
365
366 echolog(){
367     log "$@"
368     echo "$@"
369 }
370
371 warn(){
372     log "WARNING: $*"
373     WARNINGS="${WARNINGS}WARNING: $*\n"
374 }
375
376 die(){
377     echolog "$@"
378     cat <<EOF
379
380 If you think configure made a mistake, make sure you are using the latest
381 version from Git.  If the latest version fails, report the problem to the
382 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
383 EOF
384     if disabled logging; then
385         cat <<EOF
386 Rerun configure with logging enabled (do not use --disable-logging), and
387 include the log this produces with your report.
388 EOF
389     else
390         cat <<EOF
391 Include the log file "$logfile" produced by configure as this will help
392 solving the problem.
393 EOF
394     fi
395     exit 1
396 }
397
398 # Avoid locale weirdness, besides we really just want to translate ASCII.
399 toupper(){
400     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
401 }
402
403 tolower(){
404     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
405 }
406
407 c_escape(){
408     echo "$*" | sed 's/["\\]/\\\0/g'
409 }
410
411 sh_quote(){
412     v=$(echo "$1" | sed "s/'/'\\\\''/g")
413     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
414     echo "$v"
415 }
416
417 cleanws(){
418     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
419 }
420
421 filter(){
422     pat=$1
423     shift
424     for v; do
425         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
426     done
427 }
428
429 filter_out(){
430     pat=$1
431     shift
432     for v; do
433         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
434     done
435 }
436
437 map(){
438     m=$1
439     shift
440     for v; do eval $m; done
441 }
442
443 add_suffix(){
444     suffix=$1
445     shift
446     for v; do echo ${v}${suffix}; done
447 }
448
449 set_all(){
450     value=$1
451     shift
452     for var in $*; do
453         eval $var=$value
454     done
455 }
456
457 set_weak(){
458     value=$1
459     shift
460     for var; do
461         eval : \${$var:=$value}
462     done
463 }
464
465 sanitize_var_name(){
466     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
467 }
468
469 set_sanitized(){
470     var=$1
471     shift
472     eval $(sanitize_var_name "$var")='$*'
473 }
474
475 get_sanitized(){
476     eval echo \$$(sanitize_var_name "$1")
477 }
478
479 pushvar(){
480     for pvar in $*; do
481         eval level=\${${pvar}_level:=0}
482         eval ${pvar}_${level}="\$$pvar"
483         eval ${pvar}_level=$(($level+1))
484     done
485 }
486
487 popvar(){
488     for pvar in $*; do
489         eval level=\${${pvar}_level:-0}
490         test $level = 0 && continue
491         eval level=$(($level-1))
492         eval $pvar="\${${pvar}_${level}}"
493         eval ${pvar}_level=$level
494         eval unset ${pvar}_${level}
495     done
496 }
497
498 enable(){
499     set_all yes $*
500 }
501
502 disable(){
503     set_all no $*
504 }
505
506 enable_weak(){
507     set_weak yes $*
508 }
509
510 disable_weak(){
511     set_weak no $*
512 }
513
514 enable_sanitized(){
515     for var; do
516         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
517     done
518 }
519
520 disable_sanitized(){
521     for var; do
522         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
523     done
524 }
525
526 do_enable_deep(){
527     for var; do
528         enabled $var && continue
529         eval sel="\$${var}_select"
530         eval sgs="\$${var}_suggest"
531         pushvar var sgs
532         enable_deep $sel
533         popvar sgs
534         enable_deep_weak $sgs
535         popvar var
536     done
537 }
538
539 enable_deep(){
540     do_enable_deep $*
541     enable $*
542 }
543
544 enable_deep_weak(){
545     for var; do
546         disabled $var && continue
547         pushvar var
548         do_enable_deep $var
549         popvar var
550         enable_weak $var
551     done
552 }
553
554 enabled(){
555     test "${1#!}" = "$1" && op== || op=!=
556     eval test "x\$${1#!}" $op "xyes"
557 }
558
559 disabled(){
560     test "${1#!}" = "$1" && op== || op=!=
561     eval test "x\$${1#!}" $op "xno"
562 }
563
564 enabled_all(){
565     for opt; do
566         enabled $opt || return 1
567     done
568 }
569
570 disabled_all(){
571     for opt; do
572         disabled $opt || return 1
573     done
574 }
575
576 enabled_any(){
577     for opt; do
578         enabled $opt && return 0
579     done
580 }
581
582 disabled_any(){
583     for opt; do
584         disabled $opt && return 0
585     done
586     return 1
587 }
588
589 set_default(){
590     for opt; do
591         eval : \${$opt:=\$${opt}_default}
592     done
593 }
594
595 is_in(){
596     value=$1
597     shift
598     for var in $*; do
599         [ $var = $value ] && return 0
600     done
601     return 1
602 }
603
604 check_deps(){
605     for cfg; do
606         enabled ${cfg}_checking && die "Circular dependency for $cfg."
607         disabled ${cfg}_checking && continue
608         enable ${cfg}_checking
609
610         eval dep_all="\$${cfg}_deps"
611         eval dep_any="\$${cfg}_deps_any"
612         eval dep_con="\$${cfg}_conflict"
613         eval dep_sel="\$${cfg}_select"
614         eval dep_sgs="\$${cfg}_suggest"
615         eval dep_ifa="\$${cfg}_if"
616         eval dep_ifn="\$${cfg}_if_any"
617
618         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
619         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
620         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
621
622         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
623         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
624         enabled_all  $dep_all || disable $cfg
625         enabled_any  $dep_any || disable $cfg
626         disabled_all $dep_con || disable $cfg
627         disabled_any $dep_sel && disable $cfg
628
629         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
630
631         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
632             # filter out library deps, these do not belong in extralibs
633             is_in $dep $LIBRARY_LIST && continue
634             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
635         done
636
637         disable ${cfg}_checking
638     done
639 }
640
641 print_config(){
642     pfx=$1
643     files=$2
644     shift 2
645     map 'eval echo "$v \${$v:-no}"' "$@" |
646     awk "BEGIN { split(\"$files\", files) }
647         {
648             c = \"$pfx\" toupper(\$1);
649             v = \$2;
650             sub(/yes/, 1, v);
651             sub(/no/,  0, v);
652             for (f in files) {
653                 file = files[f];
654                 if (file ~ /\\.h\$/) {
655                     printf(\"#define %s %d\\n\", c, v) >>file;
656                 } else if (file ~ /\\.asm\$/) {
657                     printf(\"%%define %s %d\\n\", c, v) >>file;
658                 } else if (file ~ /\\.mak\$/) {
659                     n = -v ? \"\" : \"!\";
660                     printf(\"%s%s=yes\\n\", n, c) >>file;
661                 }
662             }
663         }"
664 }
665
666 print_enabled(){
667     suf=$1
668     shift
669     for v; do
670         enabled $v && printf "%s\n" ${v%$suf}
671     done
672 }
673
674 append(){
675     var=$1
676     shift
677     eval "$var=\"\$$var $*\""
678 }
679
680 prepend(){
681     var=$1
682     shift
683     eval "$var=\"$* \$$var\""
684 }
685
686 unique(){
687     var=$1
688     uniq_list=""
689     for tok in $(eval echo \$$var); do
690         uniq_list="$(filter_out $tok $uniq_list) $tok"
691     done
692     eval "$var=\"${uniq_list}\""
693 }
694
695 resolve(){
696     var=$1
697     tmpvar=
698     for entry in $(eval echo \$$var); do
699         tmpvar="$tmpvar $(eval echo \$${entry})"
700     done
701     eval "$var=\"${tmpvar}\""
702 }
703
704 add_cppflags(){
705     append CPPFLAGS "$@"
706 }
707
708 add_cflags(){
709     append CFLAGS $($cflags_filter "$@")
710 }
711
712 add_cflags_headers(){
713     append CFLAGS_HEADERS $($cflags_filter "$@")
714 }
715
716 add_asflags(){
717     append ASFLAGS $($asflags_filter "$@")
718 }
719
720 add_objcflags(){
721     append OBJCFLAGS $($objcflags_filter "$@")
722 }
723
724 add_ldflags(){
725     append LDFLAGS $($ldflags_filter "$@")
726 }
727
728 add_ldexeflags(){
729     append LDEXEFLAGS $($ldflags_filter "$@")
730 }
731
732 add_ldsoflags(){
733     append LDSOFLAGS $($ldflags_filter "$@")
734 }
735
736 add_stripflags(){
737     append STRIPFLAGS "$@"
738 }
739
740 add_extralibs(){
741     prepend extralibs $($ldflags_filter "$@")
742 }
743
744 add_host_cppflags(){
745     append host_cppflags "$@"
746 }
747
748 add_host_cflags(){
749     append host_cflags $($host_cflags_filter "$@")
750 }
751
752 add_host_ldflags(){
753     append host_ldflags $($host_ldflags_filter "$@")
754 }
755
756 add_compat(){
757     append compat_objs $1
758     shift
759     map 'add_cppflags -D$v' "$@"
760 }
761
762 check_cmd(){
763     log "$@"
764     "$@" >> $logfile 2>&1
765 }
766
767 cc_o(){
768     eval printf '%s\\n' $CC_O
769 }
770
771 cc_e(){
772     eval printf '%s\\n' $CC_E
773 }
774
775 check_cc(){
776     log check_cc "$@"
777     cat > $TMPC
778     log_file $TMPC
779     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
780 }
781
782 check_objcc(){
783     log check_objcc "$@"
784     cat > $TMPC
785     log_file $TMPC
786     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
787 }
788
789 check_cpp(){
790     log check_cpp "$@"
791     cat > $TMPC
792     log_file $TMPC
793     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
794 }
795
796 as_o(){
797     eval printf '%s\\n' $AS_O
798 }
799
800 check_as(){
801     log check_as "$@"
802     cat > $TMPS
803     log_file $TMPS
804     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
805 }
806
807 check_inline_asm(){
808     log check_inline_asm "$@"
809     name="$1"
810     code="$2"
811     shift 2
812     disable $name
813     check_cc "$@" <<EOF && enable $name
814 void foo(void){ __asm__ volatile($code); }
815 EOF
816 }
817
818 check_insn(){
819     log check_insn "$@"
820     check_inline_asm ${1}_inline "\"$2\""
821     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
822 }
823
824 check_x86asm(){
825     log check_x86asm "$@"
826     echo "$1" > $TMPS
827     log_file $TMPS
828     shift 1
829     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
830 }
831
832 ld_o(){
833     eval printf '%s\\n' $LD_O
834 }
835
836 check_ld(){
837     log check_ld "$@"
838     flags=$(filter_out '-l*' "$@")
839     libs=$(filter '-l*' "$@")
840     check_cc $($cflags_filter $flags) || return
841     flags=$($ldflags_filter $flags)
842     libs=$($ldflags_filter $libs)
843     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
844 }
845
846 print_include(){
847     hdr=$1
848     test "${hdr%.h}" = "${hdr}" &&
849         echo "#include $hdr"    ||
850         echo "#include <$hdr>"
851 }
852
853 check_code(){
854     log check_code "$@"
855     check=$1
856     headers=$2
857     code=$3
858     shift 3
859     {
860         for hdr in $headers; do
861             print_include $hdr
862         done
863         echo "int main(void) { $code; return 0; }"
864     } | check_$check "$@"
865 }
866
867 check_cppflags(){
868     log check_cppflags "$@"
869     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
870 #include <stdlib.h>;
871 EOF
872 }
873
874 test_cflags(){
875     log test_cflags "$@"
876     set -- $($cflags_filter "$@")
877     check_cc "$@" <<EOF
878 int x;
879 EOF
880 }
881
882 check_cflags(){
883     log check_cflags "$@"
884     test_cflags "$@" && add_cflags "$@"
885 }
886
887 test_objcflags(){
888     log test_objcflags "$@"
889     set -- $($objcflags_filter "$@")
890     check_objcc "$@" <<EOF
891 int x;
892 EOF
893 }
894
895 check_objcflags(){
896     log check_objcflags "$@"
897     test_objcflags "$@" && add_objcflags "$@"
898 }
899
900 test_ldflags(){
901     log test_ldflags "$@"
902     check_ld "$@" <<EOF
903 int main(void){ return 0; }
904 EOF
905 }
906
907 check_ldflags(){
908     log check_ldflags "$@"
909     test_ldflags "$@" && add_ldflags "$@"
910 }
911
912 test_stripflags(){
913     log test_stripflags "$@"
914     # call check_cc to get a fresh TMPO
915     check_cc <<EOF
916 int main(void) { return 0; }
917 EOF
918     check_cmd $strip $STRIPFLAGS "$@" $TMPO
919 }
920
921 check_stripflags(){
922     log check_stripflags "$@"
923     test_stripflags "$@" && add_stripflags "$@"
924 }
925
926 check_header(){
927     log check_header "$@"
928     headers=$1
929     shift
930     disable_sanitized $headers
931     {
932         for hdr in $headers; do
933             print_include $hdr
934         done
935         echo "int x;"
936     } | check_cpp "$@" && enable_sanitized $headers
937 }
938
939 check_func(){
940     log check_func "$@"
941     func=$1
942     shift
943     disable $func
944     check_ld "$@" <<EOF && enable $func
945 extern int $func();
946 int main(void){ $func(); }
947 EOF
948 }
949
950 check_mathfunc(){
951     log check_mathfunc "$@"
952     func=$1
953     narg=$2
954     shift 2
955     test $narg = 2 && args="f, g" || args="f"
956     disable $func
957     check_ld "$@" <<EOF && enable $func
958 #include <math.h>
959 float foo(float f, float g) { return $func($args); }
960 int main(void){ return 0; }
961 EOF
962 }
963
964 check_func_headers(){
965     log check_func_headers "$@"
966     headers=$1
967     funcs=$2
968     shift 2
969     {
970         for hdr in $headers; do
971             print_include $hdr
972         done
973         for func in $funcs; do
974             echo "long check_$func(void) { return (long) $func; }"
975         done
976         echo "int main(void) { return 0; }"
977     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
978 }
979
980 check_cpp_condition(){
981     log check_cpp_condition "$@"
982     header=$1
983     condition=$2
984     shift 2
985     check_cpp "$@" <<EOF
986 #include <$header>
987 #if !($condition)
988 #error "unsatisfied condition: $condition"
989 #endif
990 EOF
991 }
992
993 test_cflags_cpp(){
994     log test_cflags_cpp "$@"
995     flags=$1
996     condition=$2
997     shift 2
998     set -- $($cflags_filter "$flags")
999     check_cpp "$@" <<EOF
1000 #if !($condition)
1001 #error "unsatisfied condition: $condition"
1002 #endif
1003 EOF
1004 }
1005
1006 check_lib(){
1007     log check_lib "$@"
1008     name="$1"
1009     headers="$2"
1010     funcs="$3"
1011     shift 3
1012     disable $name
1013     check_func_headers "$headers" "$funcs" "$@" &&
1014         enable $name && eval ${name}_extralibs="\$@"
1015 }
1016
1017 test_pkg_config(){
1018     log test_pkg_config "$@"
1019     name="$1"
1020     pkg_version="$2"
1021     pkg="${2%% *}"
1022     headers="$3"
1023     funcs="$4"
1024     shift 4
1025     disable $name
1026     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1027     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1028     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1029     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1030         enable $name &&
1031         set_sanitized "${name}_cflags"    $pkg_cflags &&
1032         set_sanitized "${name}_extralibs" $pkg_libs
1033 }
1034
1035 check_pkg_config(){
1036     log check_pkg_config "$@"
1037     name="$1"
1038     test_pkg_config "$@" &&
1039         eval add_cflags \$${name}_cflags
1040 }
1041
1042 check_exec(){
1043     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1044 }
1045
1046 check_exec_crash(){
1047     log check_exec_crash "$@"
1048     code=$(cat)
1049
1050     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1051     # are safe but may not be available everywhere.  Thus we use
1052     # raise(SIGTERM) instead.  The check is run in a subshell so we
1053     # can redirect the "Terminated" message from the shell.  SIGBUS
1054     # is not defined by standard C so it is used conditionally.
1055
1056     (check_exec "$@") >> $logfile 2>&1 <<EOF
1057 #include <signal.h>
1058 static void sighandler(int sig){
1059     raise(SIGTERM);
1060 }
1061 int foo(void){
1062     $code
1063 }
1064 int (*func_ptr)(void) = foo;
1065 int main(void){
1066     signal(SIGILL, sighandler);
1067     signal(SIGFPE, sighandler);
1068     signal(SIGSEGV, sighandler);
1069 #ifdef SIGBUS
1070     signal(SIGBUS, sighandler);
1071 #endif
1072     return func_ptr();
1073 }
1074 EOF
1075 }
1076
1077 check_type(){
1078     log check_type "$@"
1079     headers=$1
1080     type=$2
1081     shift 2
1082     disable_sanitized "$type"
1083     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1084 }
1085
1086 check_struct(){
1087     log check_struct "$@"
1088     headers=$1
1089     struct=$2
1090     member=$3
1091     shift 3
1092     disable_sanitized "${struct}_${member}"
1093     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1094         enable_sanitized "${struct}_${member}"
1095 }
1096
1097 check_builtin(){
1098     log check_builtin "$@"
1099     name=$1
1100     headers=$2
1101     builtin=$3
1102     shift 3
1103     disable "$name"
1104     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1105 }
1106
1107 check_compile_assert(){
1108     log check_compile_assert "$@"
1109     name=$1
1110     headers=$2
1111     condition=$3
1112     shift 3
1113     disable "$name"
1114     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1115 }
1116
1117 require(){
1118     log require "$@"
1119     name_version="$1"
1120     name="${1%% *}"
1121     headers="$2"
1122     func="$3"
1123     shift 3
1124     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1125 }
1126
1127 require_header(){
1128     log require "$@"
1129     headers="$1"
1130     shift
1131     check_header "$headers" "$@" || die "ERROR: $headers not found"
1132 }
1133
1134 require_cpp_condition(){
1135     log require "$@"
1136     header="$1"
1137     condition="$2"
1138     shift 2
1139     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1140 }
1141
1142 require_pkg_config(){
1143     log require_pkg_config "$@"
1144     pkg_version="$2"
1145     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1146 }
1147
1148 hostcc_e(){
1149     eval printf '%s\\n' $HOSTCC_E
1150 }
1151
1152 hostcc_o(){
1153     eval printf '%s\\n' $HOSTCC_O
1154 }
1155
1156 check_host_cc(){
1157     log check_host_cc "$@"
1158     cat > $TMPC
1159     log_file $TMPC
1160     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1161 }
1162
1163 check_host_cpp(){
1164     log check_host_cpp "$@"
1165     cat > $TMPC
1166     log_file $TMPC
1167     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1168 }
1169
1170 check_host_cppflags(){
1171     log check_host_cppflags "$@"
1172     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1173 #include <stdlib.h>;
1174 EOF
1175 }
1176
1177 check_host_cflags(){
1178     log check_host_cflags "$@"
1179     set -- $($host_cflags_filter "$@")
1180     check_host_cc "$@" <<EOF && append host_cflags "$@"
1181 int x;
1182 EOF
1183 }
1184
1185 check_host_cpp_condition(){
1186     log check_host_cpp_condition "$@"
1187     header=$1
1188     condition=$2
1189     shift 2
1190     check_host_cpp "$@" <<EOF
1191 #include <$header>
1192 #if !($condition)
1193 #error "unsatisfied condition: $condition"
1194 #endif
1195 EOF
1196 }
1197
1198 apply(){
1199     file=$1
1200     shift
1201     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1202 }
1203
1204 cp_if_changed(){
1205     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1206     mkdir -p "$(dirname $2)"
1207     cp -f "$1" "$2"
1208 }
1209
1210 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1211 # system-dependent things.
1212
1213 AVCODEC_COMPONENTS="
1214     bsfs
1215     decoders
1216     encoders
1217     hwaccels
1218     parsers
1219 "
1220
1221 AVDEVICE_COMPONENTS="
1222     indevs
1223 "
1224 AVFILTER_COMPONENTS="
1225     filters
1226 "
1227 AVFORMAT_COMPONENTS="
1228     demuxers
1229     muxers
1230     protocols
1231 "
1232
1233 COMPONENT_LIST="
1234     $AVCODEC_COMPONENTS
1235     $AVDEVICE_COMPONENTS
1236     $AVFILTER_COMPONENTS
1237     $AVFORMAT_COMPONENTS
1238 "
1239
1240 EXAMPLE_LIST="
1241     decode_audio_example
1242     decode_video_example
1243     encode_audio_example
1244     encode_video_example
1245     filter_audio_example
1246     metadata_example
1247     output_example
1248     qsvdec_example
1249     transcode_aac_example
1250 "
1251
1252 # catchall list of things that require external libs to link
1253 EXTRALIBS_LIST="
1254     cpu_init
1255     cws2fws
1256 "
1257
1258 HWACCEL_LIBRARY_NONFREE_LIST="
1259     cuda
1260     cuvid
1261     libnpp
1262 "
1263 HWACCEL_LIBRARY_LIST="
1264     $HWACCEL_LIBRARY_NONFREE_LIST
1265     d3d11va
1266     dxva2
1267     libmfx
1268     mmal
1269     nvenc
1270     omx
1271     vaapi
1272     vda
1273     vdpau
1274 "
1275
1276 EXTERNAL_LIBRARY_GPL_LIST="
1277     libcdio
1278     libx264
1279     libx265
1280     libxavs
1281     libxvid
1282 "
1283
1284 EXTERNAL_LIBRARY_NONFREE_LIST="
1285     libfaac
1286     libfdk_aac
1287     openssl
1288 "
1289
1290 EXTERNAL_LIBRARY_VERSION3_LIST="
1291     libopencore_amrnb
1292     libopencore_amrwb
1293     libvo_aacenc
1294     libvo_amrwbenc
1295 "
1296
1297 EXTERNAL_LIBRARY_LIST="
1298     $EXTERNAL_LIBRARY_GPL_LIST
1299     $EXTERNAL_LIBRARY_NONFREE_LIST
1300     $EXTERNAL_LIBRARY_VERSION3_LIST
1301     avisynth
1302     avxsynth
1303     frei0r
1304     gnutls
1305     libbs2b
1306     libdc1394
1307     libdcadec
1308     libfontconfig
1309     libfreetype
1310     libgsm
1311     libhdcd
1312     libilbc
1313     libjack
1314     libkvazaar
1315     libmp3lame
1316     libopencv
1317     libopenh264
1318     libopenjpeg
1319     libopus
1320     libpulse
1321     librtmp
1322     libschroedinger
1323     libsnappy
1324     libspeex
1325     libtheora
1326     libtwolame
1327     libvorbis
1328     libvpx
1329     libwavpack
1330     libwebp
1331     libxcb
1332     libxcb_shm
1333     libxcb_xfixes
1334 "
1335
1336 SYSTEM_LIBRARY_LIST="
1337     bzlib
1338     zlib
1339 "
1340
1341 FEATURE_LIST="
1342     gray
1343     hardcoded_tables
1344     omx_rpi
1345     runtime_cpudetect
1346     safe_bitstream_reader
1347     shared
1348     small
1349     sram
1350     static
1351     swscale_alpha
1352 "
1353
1354 LIBRARY_LIST="
1355     avcodec
1356     avdevice
1357     avfilter
1358     avformat
1359     avresample
1360     avutil
1361     swscale
1362 "
1363
1364 LICENSE_LIST="
1365     gpl
1366     nonfree
1367     version3
1368 "
1369
1370 PROGRAM_LIST="
1371     avconv
1372     avplay
1373     avprobe
1374 "
1375
1376 SUBSYSTEM_LIST="
1377     dct
1378     doc
1379     error_resilience
1380     faan
1381     fft
1382     lsp
1383     lzo
1384     mdct
1385     network
1386     rdft
1387 "
1388
1389 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1390 CONFIG_LIST="
1391     $EXAMPLE_LIST
1392     $EXTERNAL_LIBRARY_LIST
1393     $HWACCEL_LIBRARY_LIST
1394     $FEATURE_LIST
1395     $LICENSE_LIST
1396     $LIBRARY_LIST
1397     $PROGRAM_LIST
1398     $SUBSYSTEM_LIST
1399     $SYSTEM_LIBRARY_LIST
1400     neon_clobber_test
1401     pic
1402     pod2man
1403     texi2html
1404     thumb
1405     valgrind_backtrace
1406     xmm_clobber_test
1407     $COMPONENT_LIST
1408 "
1409
1410 THREADS_LIST="
1411     pthreads
1412     w32threads
1413 "
1414
1415 ATOMICS_LIST="
1416     atomics_gcc
1417     atomics_suncc
1418     atomics_win32
1419 "
1420
1421 ARCH_LIST="
1422     aarch64
1423     alpha
1424     arm
1425     avr32
1426     avr32_ap
1427     avr32_uc
1428     bfin
1429     ia64
1430     m68k
1431     mips
1432     mips64
1433     parisc
1434     ppc
1435     ppc64
1436     s390
1437     sh4
1438     sparc
1439     sparc64
1440     tilegx
1441     tilepro
1442     tomi
1443     x86
1444     x86_32
1445     x86_64
1446 "
1447
1448 ARCH_EXT_LIST_ARM="
1449     armv5te
1450     armv6
1451     armv6t2
1452     armv8
1453     neon
1454     vfp
1455     vfpv3
1456 "
1457
1458 ARCH_EXT_LIST_X86_SIMD="
1459     amd3dnow
1460     amd3dnowext
1461     avx
1462     avx2
1463     fma3
1464     fma4
1465     mmx
1466     mmxext
1467     sse
1468     sse2
1469     sse3
1470     sse4
1471     sse42
1472     ssse3
1473     xop
1474 "
1475
1476 ARCH_EXT_LIST_PPC="
1477     altivec
1478     dcbzl
1479     ldbrx
1480     power8
1481     ppc4xx
1482     vsx
1483 "
1484
1485 ARCH_EXT_LIST_X86="
1486     $ARCH_EXT_LIST_X86_SIMD
1487     cpunop
1488     i686
1489 "
1490
1491 ARCH_EXT_LIST_MIPS="
1492     loongson
1493     mips32r1
1494     mips64r1
1495     mips32r2
1496     mips64r2
1497     mips32r6
1498     mips64r6
1499 "
1500
1501 ARCH_EXT_LIST="
1502     $ARCH_EXT_LIST_ARM
1503     $ARCH_EXT_LIST_MIPS
1504     $ARCH_EXT_LIST_PPC
1505     $ARCH_EXT_LIST_X86
1506     vis
1507 "
1508
1509 ARCH_FEATURES="
1510     aligned_stack
1511     fast_64bit
1512     fast_clz
1513     fast_cmov
1514     local_aligned_8
1515     local_aligned_16
1516     local_aligned_32
1517     simd_align_16
1518     simd_align_32
1519 "
1520
1521 BUILTIN_LIST="
1522     atomic_cas_ptr
1523     machine_rw_barrier
1524     MemoryBarrier
1525     mm_empty
1526     rdtsc
1527     sem_timedwait
1528     sync_val_compare_and_swap
1529 "
1530 HAVE_LIST_CMDLINE="
1531     inline_asm
1532     symver
1533     x86asm
1534 "
1535
1536 HAVE_LIST_PUB="
1537     bigendian
1538     fast_unaligned
1539 "
1540
1541 HEADERS_LIST="
1542     AVFoundation_AVFoundation_h
1543     arpa_inet_h
1544     cdio_paranoia_h
1545     cdio_paranoia_paranoia_h
1546     dispatch_dispatch_h
1547     dev_bktr_ioctl_bt848_h
1548     dev_bktr_ioctl_meteor_h
1549     dev_ic_bt8xx_h
1550     dev_video_bktr_ioctl_bt848_h
1551     dev_video_meteor_ioctl_meteor_h
1552     direct_h
1553     dxgidebug_h
1554     dxva_h
1555     io_h
1556     machine_ioctl_bt848_h
1557     machine_ioctl_meteor_h
1558     malloc_h
1559     poll_h
1560     sys_param_h
1561     sys_resource_h
1562     sys_select_h
1563     sys_soundcard_h
1564     sys_time_h
1565     sys_un_h
1566     sys_videoio_h
1567     unistd_h
1568     valgrind_valgrind_h
1569     windows_h
1570     winsock2_h
1571 "
1572
1573 INTRINSICS_LIST="
1574     intrinsics_neon
1575 "
1576
1577 MATH_FUNCS="
1578     atanf
1579     atan2f
1580     cbrtf
1581     cosf
1582     exp2
1583     exp2f
1584     expf
1585     isinf
1586     isnan
1587     ldexpf
1588     llrint
1589     llrintf
1590     log2
1591     log2f
1592     log10f
1593     lrint
1594     lrintf
1595     powf
1596     rint
1597     round
1598     roundf
1599     sinf
1600     trunc
1601     truncf
1602 "
1603
1604 SYSTEM_FUNCS="
1605     aligned_malloc
1606     clock_gettime
1607     closesocket
1608     CommandLineToArgvW
1609     fcntl
1610     getaddrinfo
1611     gethrtime
1612     getopt
1613     GetProcessAffinityMask
1614     GetProcessMemoryInfo
1615     GetProcessTimes
1616     getrusage
1617     GetSystemTimeAsFileTime
1618     gettimeofday
1619     gmtime_r
1620     inet_aton
1621     isatty
1622     localtime_r
1623     mach_absolute_time
1624     MapViewOfFile
1625     memalign
1626     mmap
1627     mprotect
1628     nanosleep
1629     posix_memalign
1630     sched_getaffinity
1631     SetConsoleTextAttribute
1632     setmode
1633     setrlimit
1634     Sleep
1635     strerror_r
1636     sysconf
1637     sysctl
1638     usleep
1639     VirtualAlloc
1640 "
1641
1642 TOOLCHAIN_FEATURES="
1643     as_arch_directive
1644     as_fpu_directive
1645     as_func
1646     as_object_arch
1647     asm_mod_q
1648     blocks_extension
1649     ebp_available
1650     ebx_available
1651     gnu_as
1652     ibm_asm
1653     inline_asm_labels
1654     pragma_deprecated
1655     symver_asm_label
1656     symver_gnu_asm
1657     vfp_args
1658     xform_asm
1659     xmm_clobbers
1660 "
1661
1662 TYPES_LIST="
1663     CONDITION_VARIABLE_Ptr
1664     CUVIDDECODECREATEINFO_bitDepthMinus8
1665     socklen_t
1666     struct_addrinfo
1667     struct_group_source_req
1668     struct_ip_mreq_source
1669     struct_ipv6_mreq
1670     struct_pollfd
1671     struct_rusage_ru_maxrss
1672     struct_sockaddr_in6
1673     struct_sockaddr_sa_len
1674     struct_sockaddr_storage
1675     struct_v4l2_frmivalenum_discrete
1676 "
1677
1678 HAVE_LIST="
1679     $ARCH_EXT_LIST
1680     $(add_suffix _external $ARCH_EXT_LIST)
1681     $(add_suffix _inline   $ARCH_EXT_LIST)
1682     $ARCH_FEATURES
1683     $BUILTIN_LIST
1684     $HAVE_LIST_CMDLINE
1685     $HAVE_LIST_PUB
1686     $HEADERS_LIST
1687     $INTRINSICS_LIST
1688     $MATH_FUNCS
1689     $SYSTEM_FUNCS
1690     $THREADS_LIST
1691     $TOOLCHAIN_FEATURES
1692     $TYPES_LIST
1693     dos_paths
1694     libc_msvcrt
1695     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1696     sdl
1697     section_data_rel_ro
1698     threads
1699     uwp
1700     vaapi_drm
1701     vaapi_x11
1702     vdpau_x11
1703     wincrypt
1704 "
1705
1706 # options emitted with CONFIG_ prefix but not available on the command line
1707 CONFIG_EXTRA="
1708     aandcttables
1709     ac3dsp
1710     adts_header
1711     audio_frame_queue
1712     audiodsp
1713     blockdsp
1714     bswapdsp
1715     cabac
1716     cbs
1717     cbs_h264
1718     cbs_h265
1719     cbs_mpeg2
1720     dirac_parse
1721     dvprofile
1722     faandct
1723     faanidct
1724     fdctdsp
1725     flacdsp
1726     fmtconvert
1727     g722dsp
1728     gmp
1729     golomb
1730     gplv3
1731     h263dsp
1732     h264chroma
1733     h264dsp
1734     h264parse
1735     h264pred
1736     h264qpel
1737     hevcparse
1738     hpeldsp
1739     huffman
1740     huffyuvdsp
1741     huffyuvencdsp
1742     idctdsp
1743     iirfilter
1744     imdct15
1745     intrax8
1746     iso_media
1747     ividsp
1748     jpegtables
1749     lgplv3
1750     libx262
1751     libxcb_shape
1752     lpc
1753     lzf
1754     me_cmp
1755     mpeg_er
1756     mpegaudio
1757     mpegaudiodsp
1758     mpegaudioheader
1759     mpegvideo
1760     mpegvideoenc
1761     mss34dsp
1762     pixblockdsp
1763     qpeldsp
1764     qsv
1765     qsvdec
1766     qsvenc
1767     qsvvpp
1768     rangecoder
1769     riffdec
1770     riffenc
1771     rtpdec
1772     rtpenc_chain
1773     rv34dsp
1774     sinewin
1775     snappy
1776     srtp
1777     startcode
1778     texturedsp
1779     texturedspenc
1780     tpeldsp
1781     vaapi_encode
1782     vc1dsp
1783     videodsp
1784     vp3dsp
1785     vp56dsp
1786     vp8dsp
1787     wma_freqs
1788     wmv2dsp
1789 "
1790
1791 CMDLINE_SELECT="
1792     $ARCH_EXT_LIST
1793     $CONFIG_LIST
1794     $HAVE_LIST_CMDLINE
1795     $THREADS_LIST
1796     asm
1797     cross_compile
1798     debug
1799     extra_warnings
1800     logging
1801     lto
1802     optimizations
1803     rpath
1804 "
1805
1806 PATHS_LIST="
1807     bindir
1808     datadir
1809     docdir
1810     incdir
1811     libdir
1812     mandir
1813     prefix
1814     shlibdir
1815 "
1816
1817 CMDLINE_SET="
1818     $PATHS_LIST
1819     ar
1820     arch
1821     as
1822     cc
1823     objcc
1824     cpu
1825     cross_prefix
1826     custom_allocator
1827     dep_cc
1828     env
1829     extra_version
1830     host_cc
1831     host_cflags
1832     host_extralibs
1833     host_ld
1834     host_ldflags
1835     host_os
1836     ignore_tests
1837     ld
1838     logfile
1839     malloc_prefix
1840     nm
1841     optflags
1842     pkg_config
1843     pkg_config_flags
1844     samples
1845     sysinclude
1846     sysroot
1847     target_exec
1848     target_os
1849     target_path
1850     target_samples
1851     toolchain
1852     x86asmexe
1853 "
1854
1855 CMDLINE_APPEND="
1856     extra_cflags
1857     extra_objcflags
1858     host_cppflags
1859 "
1860
1861 # code dependency declarations
1862
1863 # architecture extensions
1864
1865 armv5te_deps="arm"
1866 armv6_deps="arm"
1867 armv6t2_deps="arm"
1868 armv8_deps="aarch64"
1869 neon_deps_any="aarch64 arm"
1870 intrinsics_neon_deps="neon"
1871 vfp_deps_any="aarch64 arm"
1872 vfpv3_deps="vfp"
1873
1874 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1875
1876 altivec_deps="ppc"
1877 dcbzl_deps="ppc"
1878 ldbrx_deps="ppc"
1879 ppc4xx_deps="ppc"
1880 vsx_deps="altivec"
1881 power8_deps="vsx"
1882
1883 loongson_deps="mips"
1884 mips32r1_deps="mips32"
1885 mips32r2_deps="mips32"
1886 mips32r6_deps="mips32"
1887 mips64r1_deps="mips64"
1888 mips64r2_deps="mips64"
1889 mips64r6_deps="mips64"
1890
1891 vis_deps="sparc"
1892
1893 cpunop_deps="i686"
1894 x86_64_select="i686"
1895 x86_64_suggest="fast_cmov"
1896
1897 amd3dnow_deps="mmx"
1898 amd3dnowext_deps="amd3dnow"
1899 i686_deps="x86"
1900 mmx_deps="x86"
1901 mmxext_deps="mmx"
1902 sse_deps="mmxext"
1903 sse2_deps="sse"
1904 sse3_deps="sse2"
1905 ssse3_deps="sse3"
1906 sse4_deps="ssse3"
1907 sse42_deps="sse4"
1908 avx_deps="sse42"
1909 xop_deps="avx"
1910 fma3_deps="avx"
1911 fma4_deps="avx"
1912 avx2_deps="avx"
1913
1914 mmx_external_deps="x86asm"
1915 mmx_inline_deps="inline_asm x86"
1916 mmx_suggest="mmx_external mmx_inline"
1917
1918 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1919     eval dep=\$${ext}_deps
1920     eval ${ext}_external_deps='"${dep}_external"'
1921     eval ${ext}_inline_deps='"${dep}_inline"'
1922     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1923 done
1924
1925 aligned_stack_if_any="aarch64 ppc x86"
1926 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1927 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1928 fast_unaligned_if_any="aarch64 ppc x86"
1929 simd_align_16_if_any="altivec neon sse"
1930 simd_align_32_if_any="avx"
1931
1932 # system capabilities
1933 symver_if_any="symver_asm_label symver_gnu_asm"
1934 valgrind_backtrace_conflict="optimizations"
1935 valgrind_backtrace_deps="valgrind_valgrind_h"
1936
1937 # threading support
1938 atomics_gcc_if="sync_val_compare_and_swap"
1939 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1940 atomics_win32_if="MemoryBarrier"
1941 atomics_native_if_any="$ATOMICS_LIST"
1942 w32threads_deps="atomics_native"
1943 threads_if_any="$THREADS_LIST"
1944
1945 # subsystems
1946 cbs_h264_select="cbs golomb"
1947 cbs_h265_select="cbs golomb"
1948 cbs_mpeg2_select="cbs"
1949 dct_select="rdft"
1950 dirac_parse_select="golomb"
1951 error_resilience_select="me_cmp"
1952 faandct_deps="faan"
1953 faandct_select="fdctdsp"
1954 faanidct_deps="faan"
1955 faanidct_select="idctdsp"
1956 h264dsp_select="startcode"
1957 hevcparse_select="golomb"
1958 intrax8_select="blockdsp idctdsp"
1959 mdct_select="fft"
1960 rdft_select="fft"
1961 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1962 mpeg_er_select="error_resilience"
1963 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1964 mpegaudiodsp_select="dct"
1965 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1966 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1967 vc1dsp_select="h264chroma qpeldsp startcode"
1968
1969 # decoders / encoders
1970 aac_decoder_select="adts_header imdct15 mdct sinewin"
1971 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1972 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1973 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1974 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1975 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1976 adpcm_g722_decoder_select="g722dsp"
1977 adpcm_g722_encoder_select="g722dsp"
1978 aic_decoder_select="golomb idctdsp"
1979 alac_encoder_select="lpc"
1980 als_decoder_select="bswapdsp"
1981 amrnb_decoder_select="lsp"
1982 amrwb_decoder_select="lsp"
1983 amv_decoder_select="sp5x_decoder"
1984 ape_decoder_select="bswapdsp"
1985 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1986 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1987 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1988 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1989 atrac1_decoder_select="mdct sinewin"
1990 atrac3_decoder_select="mdct"
1991 atrac3p_decoder_select="mdct sinewin"
1992 bink_decoder_select="blockdsp hpeldsp"
1993 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1994 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1995 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1996 clearvideo_decoder_select="idctdsp"
1997 cllc_decoder_select="bswapdsp"
1998 comfortnoise_encoder_select="lpc"
1999 cook_decoder_select="audiodsp mdct sinewin"
2000 cscd_decoder_select="lzo"
2001 cscd_decoder_suggest="zlib"
2002 dca_decoder_select="fmtconvert mdct"
2003 dds_decoder_select="texturedsp"
2004 dnxhd_decoder_select="blockdsp idctdsp"
2005 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2006 dvvideo_decoder_select="dvprofile idctdsp"
2007 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2008 dxa_decoder_deps="zlib"
2009 dxv_decoder_select="lzf texturedsp"
2010 eac3_decoder_select="ac3_decoder"
2011 eac3_encoder_select="ac3_encoder"
2012 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2013 eatgq_decoder_select="aandcttables idctdsp"
2014 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2015 exr_decoder_deps="zlib"
2016 ffv1_decoder_select="rangecoder"
2017 ffv1_encoder_select="rangecoder"
2018 ffvhuff_decoder_select="huffyuv_decoder"
2019 ffvhuff_encoder_select="huffyuv_encoder"
2020 fic_decoder_select="golomb"
2021 flac_decoder_select="flacdsp"
2022 flac_encoder_select="bswapdsp flacdsp lpc"
2023 flashsv_decoder_deps="zlib"
2024 flashsv_encoder_deps="zlib"
2025 flashsv2_decoder_deps="zlib"
2026 flv_decoder_select="h263_decoder"
2027 flv_encoder_select="h263_encoder"
2028 fourxm_decoder_select="blockdsp bswapdsp"
2029 fraps_decoder_select="bswapdsp huffman"
2030 g2m_decoder_deps="zlib"
2031 g2m_decoder_select="blockdsp idctdsp jpegtables"
2032 h261_decoder_select="mpeg_er mpegvideo"
2033 h261_encoder_select="aandcttables mpegvideoenc"
2034 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2035 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2036 h263i_decoder_select="h263_decoder"
2037 h263p_encoder_select="h263_encoder"
2038 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2039 h264_decoder_suggest="error_resilience"
2040 hap_decoder_select="snappy texturedsp"
2041 hap_encoder_deps="libsnappy"
2042 hap_encoder_select="texturedspenc"
2043 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2044 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2045 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2046 iac_decoder_select="imc_decoder"
2047 imc_decoder_select="bswapdsp fft mdct sinewin"
2048 indeo3_decoder_select="hpeldsp"
2049 indeo4_decoder_select="ividsp"
2050 indeo5_decoder_select="ividsp"
2051 interplay_video_decoder_select="hpeldsp"
2052 jpegls_decoder_select="mjpeg_decoder"
2053 jv_decoder_select="blockdsp"
2054 lagarith_decoder_select="huffyuvdsp"
2055 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2056 magicyuv_decoder_select="huffyuvdsp"
2057 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2058 metasound_decoder_select="lsp mdct sinewin"
2059 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2060 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2061 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2062 mjpegb_decoder_select="mjpeg_decoder"
2063 mlp_decoder_select="mlp_parser"
2064 motionpixels_decoder_select="bswapdsp"
2065 mp1_decoder_select="mpegaudio"
2066 mp1float_decoder_select="mpegaudio"
2067 mp2_decoder_select="mpegaudio"
2068 mp2float_decoder_select="mpegaudio"
2069 mp3_decoder_select="mpegaudio"
2070 mp3adu_decoder_select="mpegaudio"
2071 mp3adufloat_decoder_select="mpegaudio"
2072 mp3float_decoder_select="mpegaudio"
2073 mp3on4_decoder_select="mpegaudio"
2074 mp3on4float_decoder_select="mpegaudio"
2075 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2076 mpc8_decoder_select="mpegaudiodsp"
2077 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2078 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2079 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2080 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2081 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2082 mpeg4_encoder_select="h263_encoder"
2083 msa1_decoder_select="mss34dsp"
2084 msmpeg4v1_decoder_select="h263_decoder"
2085 msmpeg4v2_decoder_select="h263_decoder"
2086 msmpeg4v2_encoder_select="h263_encoder"
2087 msmpeg4v3_decoder_select="h263_decoder"
2088 msmpeg4v3_encoder_select="h263_encoder"
2089 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2090 mts2_decoder_select="mss34dsp"
2091 mxpeg_decoder_select="mjpeg_decoder"
2092 nellymoser_decoder_select="mdct sinewin"
2093 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2094 nuv_decoder_select="idctdsp lzo"
2095 on2avc_decoder_select="mdct"
2096 opus_decoder_deps="avresample"
2097 opus_decoder_select="imdct15"
2098 png_decoder_deps="zlib"
2099 png_encoder_deps="zlib"
2100 png_encoder_select="huffyuvencdsp"
2101 prores_decoder_select="idctdsp"
2102 prores_encoder_select="fdctdsp"
2103 qcelp_decoder_select="lsp"
2104 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2105 ra_144_encoder_select="audio_frame_queue lpc"
2106 ralf_decoder_select="golomb"
2107 rscc_decoder_deps="zlib"
2108 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2109 rv10_encoder_select="h263_encoder"
2110 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2111 rv20_encoder_select="h263_encoder"
2112 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2113 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2114 screenpresso_decoder_deps="zlib"
2115 sipr_decoder_select="lsp"
2116 sp5x_decoder_select="mjpeg_decoder"
2117 svq1_decoder_select="hpeldsp"
2118 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2119 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2120 svq3_decoder_suggest="zlib"
2121 tak_decoder_select="audiodsp"
2122 tdsc_decoder_deps="zlib"
2123 tdsc_decoder_select="mjpeg_decoder"
2124 theora_decoder_select="vp3_decoder"
2125 thp_decoder_select="mjpeg_decoder"
2126 tiff_decoder_suggest="zlib"
2127 tiff_encoder_suggest="zlib"
2128 truehd_decoder_select="mlp_decoder"
2129 truemotion2_decoder_select="bswapdsp"
2130 truespeech_decoder_select="bswapdsp"
2131 tscc_decoder_deps="zlib"
2132 txd_decoder_select="texturedsp"
2133 twinvq_decoder_select="mdct lsp sinewin"
2134 utvideo_decoder_select="bswapdsp huffyuvdsp"
2135 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2136 vble_decoder_select="huffyuvdsp"
2137 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2138 vc1image_decoder_select="vc1_decoder"
2139 vorbis_decoder_select="mdct"
2140 vorbis_encoder_select="mdct"
2141 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2142 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2143 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2144 vp6a_decoder_select="vp6_decoder"
2145 vp6f_decoder_select="vp6_decoder"
2146 vp7_decoder_select="h264pred videodsp vp8dsp"
2147 vp8_decoder_select="h264pred videodsp vp8dsp"
2148 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2149 webp_decoder_select="vp8_decoder"
2150 wmapro_decoder_select="mdct sinewin wma_freqs"
2151 wmav1_decoder_select="mdct sinewin wma_freqs"
2152 wmav1_encoder_select="mdct sinewin wma_freqs"
2153 wmav2_decoder_select="mdct sinewin wma_freqs"
2154 wmav2_encoder_select="mdct sinewin wma_freqs"
2155 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2156 wmv1_decoder_select="h263_decoder"
2157 wmv1_encoder_select="h263_encoder"
2158 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2159 wmv2_encoder_select="h263_encoder wmv2dsp"
2160 wmv3_decoder_select="vc1_decoder"
2161 wmv3image_decoder_select="wmv3_decoder"
2162 zerocodec_decoder_deps="zlib"
2163 zlib_decoder_deps="zlib"
2164 zlib_encoder_deps="zlib"
2165 zmbv_decoder_deps="zlib"
2166 zmbv_encoder_deps="zlib"
2167
2168 # hardware accelerators
2169 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2170 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2171 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2172 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2173
2174 h263_vaapi_hwaccel_deps="vaapi"
2175 h263_vaapi_hwaccel_select="h263_decoder"
2176 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2177 h264_cuvid_hwaccel_select="h264_decoder"
2178 h264_d3d11va_hwaccel_deps="d3d11va"
2179 h264_d3d11va_hwaccel_select="h264_decoder"
2180 h264_d3d11va2_hwaccel_deps="d3d11va"
2181 h264_d3d11va2_hwaccel_select="h264_decoder"
2182 h264_dxva2_hwaccel_deps="dxva2"
2183 h264_dxva2_hwaccel_select="h264_decoder"
2184 h264_mmal_hwaccel_deps="mmal"
2185 h264_qsv_hwaccel_deps="libmfx"
2186 h264_vaapi_hwaccel_deps="vaapi"
2187 h264_vaapi_hwaccel_select="h264_decoder"
2188 h264_vda_hwaccel_deps="vda"
2189 h264_vda_hwaccel_select="h264_decoder"
2190 h264_vda_old_hwaccel_deps="vda"
2191 h264_vda_old_hwaccel_select="h264_decoder"
2192 h264_vdpau_hwaccel_deps="vdpau"
2193 h264_vdpau_hwaccel_select="h264_decoder"
2194 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2195 hevc_cuvid_hwaccel_select="hevc_decoder"
2196 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2197 hevc_d3d11va_hwaccel_select="hevc_decoder"
2198 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2199 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2200 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2201 hevc_dxva2_hwaccel_select="hevc_decoder"
2202 hevc_qsv_hwaccel_deps="libmfx"
2203 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2204 hevc_vaapi_hwaccel_select="hevc_decoder"
2205 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2206 hevc_vdpau_hwaccel_select="hevc_decoder"
2207 mpeg1_vdpau_hwaccel_deps="vdpau"
2208 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2209 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2210 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2211 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2212 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2213 mpeg2_dxva2_hwaccel_deps="dxva2"
2214 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2215 mpeg2_mmal_hwaccel_deps="mmal"
2216 mpeg2_qsv_hwaccel_deps="libmfx"
2217 mpeg2_vaapi_hwaccel_deps="vaapi"
2218 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2219 mpeg2_vdpau_hwaccel_deps="vdpau"
2220 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2221 mpeg4_vaapi_hwaccel_deps="vaapi"
2222 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2223 mpeg4_vdpau_hwaccel_deps="vdpau"
2224 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2225 vc1_d3d11va_hwaccel_deps="d3d11va"
2226 vc1_d3d11va_hwaccel_select="vc1_decoder"
2227 vc1_d3d11va2_hwaccel_deps="d3d11va"
2228 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2229 vc1_dxva2_hwaccel_deps="dxva2"
2230 vc1_dxva2_hwaccel_select="vc1_decoder"
2231 vc1_mmal_hwaccel_deps="mmal"
2232 vc1_qsv_hwaccel_deps="libmfx"
2233 vc1_vaapi_hwaccel_deps="vaapi"
2234 vc1_vaapi_hwaccel_select="vc1_decoder"
2235 vc1_vdpau_hwaccel_deps="vdpau"
2236 vc1_vdpau_hwaccel_select="vc1_decoder"
2237 vp8_qsv_hwaccel_deps="libmfx"
2238 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2239 vp8_vaapi_hwaccel_select="vp8_decoder"
2240 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2241 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2242 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2243 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2244 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2245
2246 # hardware-accelerated codecs
2247 nvenc_deps_any="libdl LoadLibrary"
2248 omx_deps="libdl pthreads"
2249 omx_rpi_select="omx"
2250 qsv_deps="libmfx"
2251 qsvdec_select="qsv"
2252 qsvenc_select="qsv"
2253 qsvvpp_select="qsv"
2254 vaapi_encode_deps="vaapi"
2255
2256 hwupload_cuda_filter_deps="cuda"
2257 scale_npp_filter_deps="cuda libnpp"
2258
2259 h264_mmal_decoder_deps="mmal"
2260 h264_nvenc_encoder_deps="nvenc"
2261 h264_omx_encoder_deps="omx"
2262 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2263 h264_qsv_encoder_select="qsvenc"
2264 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2265 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2266 hevc_nvenc_encoder_deps="nvenc"
2267 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2268 hevc_qsv_encoder_select="hevcparse qsvenc"
2269 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2270 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2271 mjpeg_qsv_encoder_deps="libmfx"
2272 mjpeg_qsv_encoder_select="qsvenc"
2273 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2274 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2275 mpeg2_mmal_decoder_deps="mmal"
2276 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2277 mpeg2_qsv_encoder_select="qsvenc"
2278 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2279 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2280 mpeg4_omx_encoder_deps="omx"
2281 vc1_mmal_decoder_deps="mmal"
2282 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2283 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2284 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2285 vp8_vaapi_encoder_select="vaapi_encode"
2286 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2287 vp9_vaapi_encoder_select="vaapi_encode"
2288
2289 nvenc_h264_encoder_select="h264_nvenc_encoder"
2290 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2291
2292 # parsers
2293 aac_parser_select="adts_header"
2294 h264_parser_select="golomb h264dsp h264parse"
2295 hevc_parser_select="hevcparse"
2296 mpegaudio_parser_select="mpegaudioheader"
2297 mpegvideo_parser_select="mpegvideo"
2298 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2299 vc1_parser_select="vc1dsp"
2300
2301 # bitstream_filters
2302 aac_adtstoasc_bsf_select="adts_header"
2303 h264_metadata_bsf_select="cbs_h264"
2304 h264_redundant_pps_bsf_select="cbs_h264"
2305 hevc_metadata_bsf_select="cbs_h265"
2306 mjpeg2jpeg_bsf_select="jpegtables"
2307 mpeg2_metadata_bsf_select="cbs_mpeg2"
2308 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2309
2310 # external libraries
2311 avisynth_deps="LoadLibrary"
2312 avxsynth_deps="libdl"
2313 avisynth_demuxer_deps_any="avisynth avxsynth"
2314 avisynth_demuxer_select="riffdec"
2315 libdcadec_decoder_deps="libdcadec"
2316 libfaac_encoder_deps="libfaac"
2317 libfaac_encoder_select="audio_frame_queue"
2318 libfdk_aac_decoder_deps="libfdk_aac"
2319 libfdk_aac_encoder_deps="libfdk_aac"
2320 libfdk_aac_encoder_select="audio_frame_queue"
2321 libgsm_decoder_deps="libgsm"
2322 libgsm_encoder_deps="libgsm"
2323 libgsm_ms_decoder_deps="libgsm"
2324 libgsm_ms_encoder_deps="libgsm"
2325 libilbc_decoder_deps="libilbc"
2326 libilbc_encoder_deps="libilbc"
2327 libkvazaar_encoder_deps="libkvazaar"
2328 libmp3lame_encoder_deps="libmp3lame"
2329 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2330 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2331 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2332 libopencore_amrnb_encoder_select="audio_frame_queue"
2333 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2334 libopenh264_decoder_deps="libopenh264"
2335 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2336 libopenh264_encoder_deps="libopenh264"
2337 libopenjpeg_decoder_deps="libopenjpeg"
2338 libopenjpeg_encoder_deps="libopenjpeg"
2339 libopus_decoder_deps="libopus"
2340 libopus_encoder_deps="libopus"
2341 libopus_encoder_select="audio_frame_queue"
2342 libschroedinger_decoder_deps="libschroedinger"
2343 libschroedinger_encoder_deps="libschroedinger"
2344 libspeex_decoder_deps="libspeex"
2345 libspeex_encoder_deps="libspeex"
2346 libspeex_encoder_select="audio_frame_queue"
2347 libtheora_encoder_deps="libtheora"
2348 libtwolame_encoder_deps="libtwolame"
2349 libvo_aacenc_encoder_deps="libvo_aacenc"
2350 libvo_aacenc_encoder_select="audio_frame_queue"
2351 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2352 libvorbis_encoder_deps="libvorbis"
2353 libvorbis_encoder_select="audio_frame_queue"
2354 libvpx_vp8_decoder_deps="libvpx"
2355 libvpx_vp8_encoder_deps="libvpx"
2356 libvpx_vp9_decoder_deps="libvpx"
2357 libvpx_vp9_encoder_deps="libvpx"
2358 libwavpack_encoder_deps="libwavpack"
2359 libwavpack_encoder_select="audio_frame_queue"
2360 libwebp_encoder_deps="libwebp"
2361 libx262_encoder_deps="libx262"
2362 libx264_encoder_deps="libx264"
2363 libx265_encoder_deps="libx265"
2364 libxavs_encoder_deps="libxavs"
2365 libxvid_encoder_deps="libxvid mkstemp"
2366
2367 # demuxers / muxers
2368 ac3_demuxer_select="ac3_parser"
2369 asf_demuxer_select="riffdec"
2370 asf_muxer_select="riffenc"
2371 asf_stream_muxer_select="asf_muxer"
2372 avi_demuxer_select="iso_media riffdec"
2373 avi_muxer_select="riffenc"
2374 caf_demuxer_select="iso_media riffdec"
2375 dash_muxer_select="mp4_muxer"
2376 dirac_demuxer_select="dirac_parser"
2377 dv_demuxer_select="dvprofile"
2378 dv_muxer_select="dvprofile"
2379 dxa_demuxer_select="riffdec"
2380 eac3_demuxer_select="ac3_parser"
2381 f4v_muxer_select="mov_muxer"
2382 flac_demuxer_select="flac_parser"
2383 hds_muxer_select="flv_muxer"
2384 hls_muxer_select="mpegts_muxer"
2385 ipod_muxer_select="mov_muxer"
2386 ismv_muxer_select="mov_muxer"
2387 matroska_audio_muxer_select="matroska_muxer"
2388 matroska_demuxer_select="iso_media riffdec"
2389 matroska_demuxer_suggest="bzlib lzo zlib"
2390 matroska_muxer_select="iso_media riffenc"
2391 mmf_muxer_select="riffenc"
2392 mov_demuxer_select="iso_media riffdec"
2393 mov_demuxer_suggest="zlib"
2394 mov_muxer_select="iso_media riffenc rtpenc_chain"
2395 mp3_demuxer_select="mpegaudio_parser"
2396 mp3_muxer_select="mpegaudioheader"
2397 mp4_muxer_select="mov_muxer"
2398 mpegts_demuxer_select="iso_media"
2399 mpegts_muxer_select="adts_muxer latm_muxer"
2400 mpegtsraw_demuxer_select="mpegts_demuxer"
2401 mxf_d10_muxer_select="mxf_muxer"
2402 nut_muxer_select="riffenc"
2403 nuv_demuxer_select="riffdec"
2404 oga_muxer_select="ogg_muxer"
2405 ogg_demuxer_select="dirac_parse"
2406 opus_muxer_select="ogg_muxer"
2407 psp_muxer_select="mov_muxer"
2408 rtp_demuxer_select="sdp_demuxer"
2409 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2410 rtsp_demuxer_select="http_protocol rtpdec"
2411 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2412 sap_demuxer_select="sdp_demuxer"
2413 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2414 sdp_demuxer_select="rtpdec"
2415 smoothstreaming_muxer_select="ismv_muxer"
2416 spdif_demuxer_select="adts_header"
2417 spdif_muxer_select="adts_header"
2418 spx_muxer_select="ogg_muxer"
2419 swf_demuxer_suggest="zlib"
2420 tak_demuxer_select="tak_parser"
2421 tg2_muxer_select="mov_muxer"
2422 tgp_muxer_select="mov_muxer"
2423 w64_demuxer_select="wav_demuxer"
2424 wav_demuxer_select="riffdec"
2425 wav_muxer_select="riffenc"
2426 webm_muxer_select="iso_media riffenc"
2427 wtv_demuxer_select="mpegts_demuxer riffdec"
2428 xmv_demuxer_select="riffdec"
2429 xwma_demuxer_select="riffdec"
2430
2431 # indevs
2432 alsa_indev_deps="alsa"
2433 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2434 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2435 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2436 fbdev_indev_deps="linux_fb_h"
2437 jack_indev_deps="libjack"
2438 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2439 libcdio_indev_deps="libcdio"
2440 libdc1394_indev_deps="libdc1394"
2441 oss_indev_deps_any="sys_soundcard_h"
2442 pulse_indev_deps="libpulse"
2443 sndio_indev_deps="sndio"
2444 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2445 vfwcap_indev_deps="vfw32 vfwcap_defines"
2446 xcbgrab_indev_deps="libxcb libxcb_shape"
2447 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2448
2449 # protocols
2450 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2451 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2452 ffrtmpcrypt_protocol_select="tcp_protocol"
2453 ffrtmphttp_protocol_conflict="librtmp_protocol"
2454 ffrtmphttp_protocol_select="http_protocol"
2455 gopher_protocol_select="network"
2456 http_protocol_select="tcp_protocol"
2457 http_protocol_suggest="zlib"
2458 httpproxy_protocol_select="tcp_protocol"
2459 httpproxy_protocol_suggest="zlib"
2460 https_protocol_select="tls_protocol"
2461 https_protocol_suggest="zlib"
2462 icecast_protocol_select="http_protocol"
2463 librtmp_protocol_deps="librtmp"
2464 librtmpe_protocol_deps="librtmp"
2465 librtmps_protocol_deps="librtmp"
2466 librtmpt_protocol_deps="librtmp"
2467 librtmpte_protocol_deps="librtmp"
2468 mmsh_protocol_select="http_protocol"
2469 mmst_protocol_select="network"
2470 rtmp_protocol_conflict="librtmp_protocol"
2471 rtmp_protocol_select="tcp_protocol"
2472 rtmp_protocol_suggest="zlib"
2473 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2474 rtmpe_protocol_suggest="zlib"
2475 rtmps_protocol_conflict="librtmp_protocol"
2476 rtmps_protocol_select="tls_protocol"
2477 rtmps_protocol_suggest="zlib"
2478 rtmpt_protocol_select="ffrtmphttp_protocol"
2479 rtmpt_protocol_suggest="zlib"
2480 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2481 rtmpte_protocol_suggest="zlib"
2482 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2483 rtmpts_protocol_suggest="zlib"
2484 rtp_protocol_select="udp_protocol"
2485 sctp_protocol_deps="struct_sctp_event_subscribe"
2486 sctp_protocol_select="network"
2487 srtp_protocol_select="rtp_protocol srtp"
2488 tcp_protocol_select="network"
2489 tls_protocol_deps_any="gnutls openssl"
2490 tls_protocol_select="tcp_protocol"
2491 udp_protocol_select="network"
2492 unix_protocol_deps="sys_un_h"
2493 unix_protocol_select="network"
2494
2495 # filters
2496 asyncts_filter_deps="avresample"
2497 blackframe_filter_deps="gpl"
2498 boxblur_filter_deps="gpl"
2499 bs2b_filter_deps="libbs2b"
2500 cropdetect_filter_deps="gpl"
2501 deinterlace_qsv_filter_deps="libmfx"
2502 deinterlace_vaapi_filter_deps="vaapi"
2503 delogo_filter_deps="gpl"
2504 drawtext_filter_deps="libfreetype"
2505 drawtext_filter_suggest="libfontconfig"
2506 frei0r_filter_deps="frei0r libdl"
2507 frei0r_src_filter_deps="frei0r libdl"
2508 hdcd_filter_deps="libhdcd"
2509 hqdn3d_filter_deps="gpl"
2510 interlace_filter_deps="gpl"
2511 movie_filter_deps="avcodec avformat"
2512 ocv_filter_deps="libopencv"
2513 overlay_qsv_filter_deps="libmfx"
2514 overlay_qsv_filter_select="qsvvpp"
2515 resample_filter_deps="avresample"
2516 scale_filter_deps="swscale"
2517 scale_qsv_filter_deps="libmfx"
2518 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2519 vpp_qsv_filter_deps="libmfx"
2520 vpp_qsv_filter_select="qsvvpp"
2521
2522 # examples
2523 decode_audio_example_deps="avcodec avutil"
2524 decode_video_example_deps="avcodec avutil"
2525 encode_audio_example_deps="avcodec avutil"
2526 encode_video_example_deps="avcodec avutil"
2527 filter_audio_example_deps="avfilter avutil"
2528 metadata_example_deps="avformat avutil"
2529 output_example_deps="avcodec avformat avresample avutil swscale"
2530 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2531 transcode_aac_example_deps="avcodec avformat avresample"
2532
2533 # EXTRALIBS_LIST
2534 cpu_init_extralibs="pthreads_extralibs"
2535 cws2fws_extralibs="zlib_extralibs"
2536
2537 # libraries, in linking order
2538 avcodec_deps="avutil"
2539 avcodec_select="null_bsf"
2540 avdevice_deps="avformat avcodec avutil"
2541 avfilter_deps="avutil"
2542 avformat_deps="avcodec avutil"
2543 avformat_suggest="network"
2544 avresample_deps="avutil"
2545 swscale_deps="avutil"
2546
2547 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2548 avdevice_extralibs="libm_extralibs"
2549 avformat_extralibs="libm_extralibs"
2550 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2551 avresample_extralibs="libm_extralibs"
2552 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2553 swscale_extralibs="libm_extralibs"
2554
2555 # programs
2556 avconv_deps="avcodec avfilter avformat avresample swscale"
2557 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2558                fps_filter null_filter resample_filter scale_filter
2559                trim_filter"
2560 avconv_suggest="psapi shell32"
2561 avplay_deps="avcodec avfilter avformat avresample sdl"
2562 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2563 avplay_suggest="shell32"
2564 avprobe_deps="avcodec avformat"
2565 avprobe_suggest="shell32"
2566
2567 # documentation
2568 pod2man_deps="doc"
2569 texi2html_deps="doc"
2570
2571 # default parameters
2572
2573 logfile="avbuild/config.log"
2574
2575 # installation paths
2576 prefix_default="/usr/local"
2577 bindir_default='${prefix}/bin'
2578 datadir_default='${prefix}/share/avconv'
2579 docdir_default='${prefix}/share/doc/libav'
2580 incdir_default='${prefix}/include'
2581 libdir_default='${prefix}/lib'
2582 mandir_default='${prefix}/share/man'
2583 shlibdir_default="$libdir_default"
2584
2585 # toolchain
2586 ar_default="ar"
2587 cc_default="gcc"
2588 host_cc_default="gcc"
2589 x86asmexe_default="nasm"
2590 ln_s="ln -s -f"
2591 nm_default="nm -g"
2592 pkg_config_default=pkg-config
2593 ranlib="ranlib"
2594 strip="strip"
2595 version_script='--version-script'
2596
2597 # machine
2598 arch_default=$(uname -m)
2599 cpu="generic"
2600 intrinsics="none"
2601
2602 # OS
2603 target_os_default=$(tolower $(uname -s))
2604 host_os=$target_os_default
2605
2606 # configurable options
2607 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2608
2609 enable asm
2610 enable debug
2611 enable doc
2612 enable faan faandct faanidct
2613 enable optimizations
2614 enable safe_bitstream_reader
2615 enable static
2616 enable swscale_alpha
2617 enable valgrind_backtrace
2618
2619 # By default, enable only those hwaccels that have no external dependencies.
2620 enable d3d11va dxva2 vda vdpau
2621
2622 # internal components are enabled by default
2623 enable $EXTRALIBS_LIST
2624
2625 # Avoid external, non-system, libraries getting enabled by dependency resolution
2626 disable $EXTERNAL_LIBRARY_LIST
2627
2628 # build settings
2629 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2630 LIBPREF="lib"
2631 LIBSUF=".a"
2632 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2633 SLIBPREF="lib"
2634 SLIBSUF=".so"
2635 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2636 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2637 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2638 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2639 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2640 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2641 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2642
2643 asflags_filter=echo
2644 cflags_filter=echo
2645 ldflags_filter=echo
2646
2647 AS_C='-c'
2648 AS_O='-o $@'
2649 CC_C='-c'
2650 CC_E='-E -o $@'
2651 CC_O='-o $@'
2652 OBJCC_C='-c'
2653 OBJCC_E='-E -o $@'
2654 OBJCC_O='-o $@'
2655 X86ASM_O='-o $@'
2656 LD_O='-o $@'
2657 LD_LIB='-l%'
2658 LD_PATH='-L'
2659 HOSTCC_C='-c'
2660 HOSTCC_E='-E -o $@'
2661 HOSTCC_O='-o $@'
2662 HOSTLD_O='-o $@'
2663
2664 host_extralibs='-lm'
2665 host_cflags_filter=echo
2666 host_ldflags_filter=echo
2667
2668 target_path='$(CURDIR)'
2669
2670 # since the object filename is not given with the -MM flag, the compiler
2671 # is only able to print the basename, and we must add the path ourselves
2672 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2673 DEPFLAGS='-MM'
2674
2675 mkdir -p avbuild
2676
2677 # find source path
2678 if test -f configure; then
2679     source_path=.
2680 else
2681     source_path=$(cd $(dirname "$0"); pwd)
2682     echo "$source_path" | grep -q '[[:blank:]]' &&
2683         die "Out of tree builds are impossible with whitespace in source path."
2684     test -e "$source_path/config.h" &&
2685         die "Out of tree builds are impossible with config.h in source dir."
2686 fi
2687
2688 for v in "$@"; do
2689     r=${v#*=}
2690     l=${v%"$r"}
2691     r=$(sh_quote "$r")
2692     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2693 done
2694
2695 find_things(){
2696     thing=$1
2697     pattern=$2
2698     file=$source_path/$3
2699     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2700 }
2701
2702 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2703 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2704 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2705 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2706 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2707 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2708 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2709 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2710
2711 find_things_extern(){
2712     thing=$1
2713     pattern=$2
2714     file=$source_path/$3
2715     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2716 }
2717
2718 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2719 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2720
2721 AVCODEC_COMPONENTS_LIST="
2722     $BSF_LIST
2723     $DECODER_LIST
2724     $ENCODER_LIST
2725     $HWACCEL_LIST
2726     $PARSER_LIST
2727 "
2728
2729 AVDEVICE_COMPONENTS_LIST="
2730     $INDEV_LIST
2731 "
2732
2733 AVFILTER_COMPONENTS_LIST="
2734     $FILTER_LIST
2735 "
2736
2737 AVFORMAT_COMPONENTS_LIST="
2738     $DEMUXER_LIST
2739     $MUXER_LIST
2740     $PROTOCOL_LIST
2741 "
2742
2743 ALL_COMPONENTS="
2744     $AVCODEC_COMPONENTS_LIST
2745     $AVDEVICE_COMPONENTS_LIST
2746     $AVFILTER_COMPONENTS_LIST
2747     $AVFORMAT_COMPONENTS_LIST
2748 "
2749
2750 for n in $COMPONENT_LIST; do
2751     v=$(toupper ${n%s})_LIST
2752     eval enable \$$v
2753     eval ${n}_if_any="\$$v"
2754 done
2755
2756 enable $ARCH_EXT_LIST
2757
2758 die_unknown(){
2759     echo "Unknown option \"$1\"."
2760     echo "See $0 --help for available options."
2761     exit 1
2762 }
2763
2764 print_3_columns() {
2765     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2766 }
2767
2768 show_list() {
2769     suffix=_$1
2770     shift
2771     echo $* | sed s/$suffix//g | print_3_columns
2772     exit 0
2773 }
2774
2775 for opt do
2776     optval="${opt#*=}"
2777     case "$opt" in
2778         --extra-ldflags=*)
2779             add_ldflags $optval
2780         ;;
2781         --extra-ldexeflags=*)
2782             add_ldexeflags $optval
2783         ;;
2784         --extra-ldsoflags=*)
2785             add_ldsoflags $optval
2786         ;;
2787         --extra-libs=*)
2788             add_extralibs $optval
2789         ;;
2790         --disable-devices)
2791             disable $INDEV_LIST
2792         ;;
2793         --enable-debug=*)
2794             debuglevel="$optval"
2795         ;;
2796         --disable-programs)
2797             disable $PROGRAM_LIST
2798         ;;
2799         --disable-everything)
2800             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2801         ;;
2802         --disable-all)
2803             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2804             disable $LIBRARY_LIST $PROGRAM_LIST doc
2805         ;;
2806         --enable-*=*|--disable-*=*)
2807             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2808             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2809             eval list=\$$(toupper $thing)_LIST
2810             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2811             $action $(filter "$name" $list)
2812         ;;
2813         --enable-yasm|--disable-yasm)
2814             warn "The ${opt} option is only provided for compatibility and will be\n"\
2815                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2816             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2817         ;;
2818         --enable-?*|--disable-?*)
2819             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2820             if is_in $option $COMPONENT_LIST; then
2821                 test $action = disable && action=unset
2822                 eval $action \$$(toupper ${option%s})_LIST
2823             elif is_in $option $CMDLINE_SELECT; then
2824                 $action $option
2825             else
2826                 die_unknown $opt
2827             fi
2828         ;;
2829         --list-*)
2830             NAME="${opt#--list-}"
2831             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2832             NAME=${NAME%s}
2833             eval show_list $NAME \$$(toupper $NAME)_LIST
2834         ;;
2835         --help|-h) show_help
2836         ;;
2837         --quiet|-q) quiet=yes
2838         ;;
2839         *)
2840             optname="${opt%%=*}"
2841             optname="${optname#--}"
2842             optname=$(echo "$optname" | sed 's/-/_/g')
2843             if is_in $optname $CMDLINE_SET; then
2844                 eval $optname='$optval'
2845             elif is_in $optname $CMDLINE_APPEND; then
2846                 append $optname "$optval"
2847             else
2848                 die_unknown $opt
2849             fi
2850         ;;
2851     esac
2852 done
2853
2854 for e in $env; do
2855     eval "export $e"
2856 done
2857
2858 disabled logging && logfile=/dev/null
2859
2860 # Die early if licensing-related configure options are incompatible.
2861 die_license_disabled() {
2862     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2863 }
2864
2865 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2866 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2867 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2868
2869 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2870
2871 enabled_all gnutls openssl &&
2872     die "GnuTLS and OpenSSL must not be enabled at the same time."
2873
2874 # Disable all the library-specific components if the library itself
2875 # is disabled, see AVCODEC_LIST and following _LIST variables.
2876
2877 disable_components(){
2878     disabled ${1} && disable $(
2879         eval components="\$$(toupper ${1})_COMPONENTS"
2880         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2881     )
2882 }
2883
2884 map 'disable_components $v' $LIBRARY_LIST
2885
2886 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2887 set >> $logfile
2888
2889 case "$toolchain" in
2890     *-asan)
2891         cc_default="${toolchain%-asan}"
2892         add_cflags  -fsanitize=address
2893         add_ldflags -fsanitize=address
2894     ;;
2895     *-msan)
2896         cc_default="${toolchain%-msan}"
2897         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2898         add_ldflags -fsanitize=memory
2899     ;;
2900     *-tsan)
2901         cc_default="${toolchain%-tsan}"
2902         add_cflags  -fsanitize=thread -fPIE
2903         add_ldflags -fsanitize=thread -pie
2904         case "$toolchain" in
2905             gcc-tsan)
2906                 add_cflags  -fPIC
2907                 add_ldflags -fPIC
2908                 ;;
2909         esac
2910     ;;
2911     *-usan)
2912         cc_default="${toolchain%-usan}"
2913         add_cflags  -fsanitize=undefined
2914         add_ldflags -fsanitize=undefined
2915         case "$toolchain" in
2916             clang-usan)
2917                 add_cflags -O1
2918                 ;;
2919         esac
2920     ;;
2921     valgrind-*)
2922         target_exec_default="valgrind"
2923         case "$toolchain" in
2924             valgrind-massif)
2925                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2926                 ;;
2927             valgrind-memcheck)
2928                 target_exec_args="--track-origins=yes --leak-check=full"
2929                 ;;
2930         esac
2931     ;;
2932     msvc)
2933         # Check whether the current MSVC version needs the C99 converter.
2934         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2935         # support enough of C99 to build libav. Default to the new
2936         # behaviour if the regexp was unable to match anything, since this
2937         # successfully parses the version number of existing supported
2938         # versions that require the converter (MSVC 2010 and 2012).
2939         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2940         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2941             cc_default="cl"
2942         else
2943             cc_default="c99wrap cl"
2944         fi
2945         ld_default="$source_path/compat/windows/mslink"
2946         nm_default="dumpbin -symbols"
2947         ar_default="lib"
2948         case "$arch" in
2949         aarch64|arm64)
2950             as_default="armasm64"
2951             ;;
2952         arm*)
2953             as_default="armasm"
2954             ;;
2955         esac
2956         target_os_default="win32"
2957         # Use a relative path for TMPDIR. This makes sure all the
2958         # ffconf temp files are written with a relative path, avoiding
2959         # issues with msys/win32 path conversion for MSVC parameters
2960         # such as -Fo<file> or -out:<file>.
2961         TMPDIR=.
2962     ;;
2963     icl)
2964         cc_default="icl"
2965         ld_default="xilink"
2966         nm_default="dumpbin -symbols"
2967         ar_default="xilib"
2968         target_os_default="win32"
2969         TMPDIR=.
2970     ;;
2971     gcov)
2972         add_cflags  -fprofile-arcs -ftest-coverage
2973         add_ldflags -fprofile-arcs -ftest-coverage
2974     ;;
2975     llvm-cov)
2976         add_cflags -fprofile-arcs -ftest-coverage
2977         add_ldflags --coverage
2978     ;;
2979     hardened)
2980         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2981         add_cflags   -fno-strict-overflow -fstack-protector-all
2982         add_ldflags  -Wl,-z,relro -Wl,-z,now
2983     ;;
2984     ?*)
2985         die "Unknown toolchain $toolchain"
2986     ;;
2987 esac
2988
2989 test -n "$cross_prefix" && enable cross_compile
2990
2991 if enabled cross_compile; then
2992     test -n "$arch" && test -n "$target_os" ||
2993         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2994 fi
2995
2996 ar_default="${cross_prefix}${ar_default}"
2997 cc_default="${cross_prefix}${cc_default}"
2998 objcc_default="${cross_prefix}${objcc_default}"
2999 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3000 nm_default="${cross_prefix}${nm_default}"
3001 pkg_config_default="${cross_prefix}${pkg_config_default}"
3002 ranlib="${cross_prefix}${ranlib}"
3003 strip="${cross_prefix}${strip}"
3004
3005 sysinclude_default="${sysroot}/usr/include"
3006
3007 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3008 enabled cross_compile || host_cc_default=$cc
3009 set_default host_cc
3010
3011 if ! $pkg_config --version >/dev/null 2>&1; then
3012     warn "$pkg_config not found, library detection may fail."
3013     pkg_config=false
3014 fi
3015
3016 exesuf() {
3017     case $1 in
3018         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3019     esac
3020 }
3021
3022 EXESUF=$(exesuf $target_os)
3023 HOSTEXESUF=$(exesuf $host_os)
3024
3025 # set temporary file name
3026 : ${TMPDIR:=$TEMPDIR}
3027 : ${TMPDIR:=$TMP}
3028 : ${TMPDIR:=/tmp}
3029
3030 if ! check_cmd mktemp -u XXXXXX; then
3031     # simple replacement for missing mktemp
3032     # NOT SAFE FOR GENERAL USE
3033     mktemp(){
3034         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3035         echo "$tmpname"
3036         mkdir "$tmpname"
3037     }
3038 fi
3039
3040 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3041     die "Unable to create temporary directory in $TMPDIR."
3042
3043 tmpfile(){
3044     tmp="${AVTMPDIR}/test"$2
3045     (set -C; exec > $tmp) 2> /dev/null ||
3046         die "Unable to create temporary file in $AVTMPDIR."
3047     eval $1=$tmp
3048 }
3049
3050 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3051 trap 'exit 2' INT
3052
3053 tmpfile TMPASM .asm
3054 tmpfile TMPC   .c
3055 tmpfile TMPE   $EXESUF
3056 tmpfile TMPH   .h
3057 tmpfile TMPO   .o
3058 tmpfile TMPS   .S
3059 tmpfile TMPSH  .sh
3060 tmpfile TMPV   .ver
3061
3062 unset -f mktemp
3063
3064 chmod +x $TMPE
3065
3066 # make sure we can execute files in $TMPDIR
3067 cat > $TMPSH 2>> $logfile <<EOF
3068 #! /bin/sh
3069 EOF
3070 chmod +x $TMPSH >> $logfile 2>&1
3071 if ! $TMPSH >> $logfile 2>&1; then
3072     cat <<EOF
3073 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3074 variable to another directory and make sure that it is not mounted noexec.
3075 EOF
3076     die "Sanity test failed."
3077 fi
3078
3079 armasm_flags(){
3080     for flag; do
3081         case $flag in
3082             # Filter out MSVC cl.exe options from cflags that shouldn't
3083             # be passed to gas-preprocessor
3084             -M[TD]*)                                            ;;
3085             *)                  echo $flag                      ;;
3086         esac
3087    done
3088 }
3089
3090 cparser_flags(){
3091     for flag; do
3092         case $flag in
3093             -Wno-switch)             echo -Wno-switch-enum ;;
3094             -Wno-format-zero-length) ;;
3095             -Wdisabled-optimization) ;;
3096             -Wno-pointer-sign)       echo -Wno-other ;;
3097             *)                       echo $flag ;;
3098         esac
3099     done
3100 }
3101
3102 msvc_common_flags(){
3103     for flag; do
3104         case $flag in
3105             # In addition to specifying certain flags under the compiler
3106             # specific filters, they must be specified here as well or else the
3107             # generic catch all at the bottom will print the original flag.
3108             -Wall)                ;;
3109             -Wextra)              ;;
3110             -std=c99)             ;;
3111             # Common flags
3112             -fomit-frame-pointer) ;;
3113             -g)                   echo -Z7 ;;
3114             -fno-math-errno)      ;;
3115             -fno-common)          ;;
3116             -fno-signed-zeros)    ;;
3117             -fPIC)                ;;
3118             -mthumb)              ;;
3119             -march=*)             ;;
3120             -lz)                  echo zlib.lib ;;
3121             -lx264)               echo libx264.lib ;;
3122             -l*)                  echo ${flag#-l}.lib ;;
3123             -L*)                  echo -libpath:${flag#-L} ;;
3124             *)                    echo $flag ;;
3125         esac
3126     done
3127 }
3128
3129 msvc_flags(){
3130     msvc_common_flags "$@"
3131     for flag; do
3132         case $flag in
3133             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3134                                        -wd4554 ;;
3135             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3136                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3137                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3138                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3139         esac
3140     done
3141 }
3142
3143 icl_flags(){
3144     msvc_common_flags "$@"
3145     for flag; do
3146         case $flag in
3147             # Despite what Intel's documentation says -Wall, which is supported
3148             # on Windows, does enable remarks so disable them here.
3149             -Wall)                echo $flag -Qdiag-disable:remark ;;
3150             -std=c99)             echo -Qstd=c99 ;;
3151         esac
3152     done
3153 }
3154
3155 pgi_flags(){
3156     for flag; do
3157         case $flag in
3158             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3159             -fomit-frame-pointer) echo -Mnoframe ;;
3160             -g)                   echo -gopt ;;
3161             *)                    echo $flag ;;
3162         esac
3163     done
3164 }
3165
3166 suncc_flags(){
3167     for flag; do
3168         case $flag in
3169             -march=*|-mcpu=*)
3170                 case "${flag#*=}" in
3171                     native)                   echo -xtarget=native       ;;
3172                     v9|niagara)               echo -xarch=sparc          ;;
3173                     ultrasparc)               echo -xarch=sparcvis       ;;
3174                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3175                     i586|pentium)             echo -xchip=pentium        ;;
3176                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3177                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3178                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3179                     pentium4*)          echo -xtarget=pentium4           ;;
3180                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3181                     *-sse3)             echo -xarch=sse3                 ;;
3182                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3183                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3184                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3185                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3186                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3187                     k8|opteron|athlon64|athlon-fx)
3188                                                echo -xarch=sse2a         ;;
3189                     athlon*)                   echo -xarch=pentium_proa  ;;
3190                 esac
3191                 ;;
3192             -std=c99)             echo -xc99              ;;
3193             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3194             -fPIC)                echo -KPIC -xcode=pic32 ;;
3195             -W*,*)                echo $flag              ;;
3196             -f*-*|-W*|-mimpure-text)                      ;;
3197             -shared)              echo -G                 ;;
3198             *)                    echo $flag              ;;
3199         esac
3200     done
3201 }
3202
3203 tms470_flags(){
3204     for flag; do
3205         case $flag in
3206             -march=*|-mcpu=*)
3207                 case "${flag#*=}" in
3208                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3209                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3210                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3211                     armv6*|arm11*)          echo -mv=6   ;;
3212                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3213                                             echo -mv=5e  ;;
3214                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3215                 esac
3216                 ;;
3217             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3218             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3219             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3220             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3221             -msoft-float)   echo --float_support=vfplib       ;;
3222             -O[0-3]|-mf=*)  echo $flag                        ;;
3223             -g)             echo -g -mn                       ;;
3224             -pds=*)         echo $flag                        ;;
3225             -D*|-I*)        echo $flag                        ;;
3226             --gcc|--abi=*)  echo $flag                        ;;
3227             -me)            echo $flag                        ;;
3228         esac
3229     done
3230 }
3231
3232 probe_cc(){
3233     pfx=$1
3234     _cc=$2
3235
3236     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3237     unset _ld_o _ldflags _ld_lib _ld_path
3238     unset _depflags _DEPCMD _DEPFLAGS
3239     _flags_filter=echo
3240
3241     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3242         _type=llvm_gcc
3243         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3244         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3245         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3246         _cflags_speed='-O3'
3247         _cflags_size='-Os'
3248     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3249         _type=gcc
3250         gcc_version=$($_cc --version | head -n1)
3251         gcc_basever=$($_cc -dumpversion)
3252         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3253         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3254         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3255         if ! $_cc -dumpversion | grep -q '^2\.'; then
3256             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3257         fi
3258         _cflags_speed='-O3'
3259         _cflags_size='-Os'
3260     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3261         _type=icc
3262         _ident=$($_cc --version | head -n1)
3263         _depflags='-MMD'
3264         _cflags_speed='-O3'
3265         _cflags_size='-Os'
3266         _cflags_noopt='-O1'
3267     elif $_cc -v 2>&1 | grep -q xlc; then
3268         _type=xlc
3269         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3270         _cflags_speed='-O5'
3271         _cflags_size='-O5 -qcompact'
3272     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3273         test -d "$sysroot" || die "No valid sysroot specified."
3274         _type=armcc
3275         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3276         armcc_conf="$PWD/armcc.conf"
3277         $_cc --arm_linux_configure                 \
3278              --arm_linux_config_file="$armcc_conf" \
3279              --configure_sysroot="$sysroot"        \
3280              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3281              die "Error creating armcc configuration file."
3282         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3283         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3284         as_default="${cross_prefix}gcc"
3285         _depflags='-MMD'
3286         _cflags_speed='-O3'
3287         _cflags_size='-Os'
3288     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3289         _type=tms470
3290         _ident=$($_cc -version | head -n1 | tr -s ' ')
3291         _flags='--gcc --abi=eabi -me'
3292         _cc_e='-ppl -fe=$@'
3293         _cc_o='-fe=$@'
3294         _depflags='-ppa -ppd=$(@:.o=.d)'
3295         _cflags_speed='-O3 -mf=5'
3296         _cflags_size='-O3 -mf=2'
3297         _flags_filter=tms470_flags
3298     elif $_cc -v 2>&1 | grep -q clang; then
3299         _type=clang
3300         _ident=$($_cc --version 2>/dev/null | head -n1)
3301         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3302         _cflags_speed='-O3'
3303         _cflags_size='-Os'
3304     elif $_cc -V 2>&1 | grep -q Sun; then
3305         _type=suncc
3306         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3307         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3308         _DEPFLAGS='-xM1 -xc99'
3309         _ldflags='-std=c99'
3310         _cflags_speed='-O5'
3311         _cflags_size='-O5 -xspace'
3312         _flags_filter=suncc_flags
3313     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3314         _type=pathscale
3315         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3316         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3317         _cflags_speed='-O2'
3318         _cflags_size='-Os'
3319         _flags_filter='filter_out -Wdisabled-optimization'
3320     elif $_cc -v 2>&1 | grep -q Open64; then
3321         _type=open64
3322         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3323         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3324         _cflags_speed='-O2'
3325         _cflags_size='-Os'
3326         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3327     elif $_cc -V 2>&1 | grep -q Portland; then
3328         _type=pgi
3329         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3330         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3331         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3332         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3333         _cflags_noopt="-O1"
3334         _flags_filter=pgi_flags
3335     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3336         _type=armasm
3337         _ident=$($_cc | head -n1)
3338         # 4509: "This form of conditional instruction is deprecated"
3339         _flags="-nologo -ignore 4509"
3340         _flags_filter=armasm_flags
3341     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3342         _type=msvc
3343         _ident=$($_cc 2>&1 | head -n1)
3344         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3345         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3346         _cflags_speed="-O2"
3347         _cflags_size="-O1"
3348         _cflags_noopt="-O1"
3349         if $_cc -nologo- 2>&1 | grep -q Linker; then
3350             _ld_o='-out:$@'
3351         else
3352             _ld_o='-Fe$@'
3353         fi
3354         _cc_o='-Fo$@'
3355         _cc_e='-P -Fi$@'
3356         _flags_filter=msvc_flags
3357         _ld_lib='lib%.a'
3358         _ld_path='-libpath:'
3359         _flags='-nologo'
3360     elif $_cc 2>&1 | grep -q Intel; then
3361         _type=icl
3362         _ident=$($_cc 2>&1 | head -n1)
3363         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3364         # Not only is O3 broken on 13.x+ but it is slower on all previous
3365         # versions (tested) as well.
3366         _cflags_speed="-O2"
3367         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3368         if $_cc 2>&1 | grep -q Linker; then
3369             _ld_o='-out:$@'
3370         else
3371             _ld_o='-Fe$@'
3372         fi
3373         _cc_o='-Fo$@'
3374         _cc_e='-P'
3375         _flags_filter=icl_flags
3376         _ld_lib='lib%.a'
3377         _ld_path='-libpath:'
3378         # -Qdiag-error to make icl error when seeing certain unknown arguments
3379         _flags='-nologo -Qdiag-error:4044,10157'
3380         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3381         # with MSVC which enables it by default.
3382         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3383     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3384         # lld can emulate multiple different linkers; in ms link.exe mode,
3385         # the -? parameter gives the help output which contains an identifyable
3386         # string, while it gives an error in other modes.
3387         _type=lld-link
3388         # The link.exe mode doesn't have a switch for getting the version,
3389         # but we can force it back to gnu mode and get the version from there.
3390         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3391         _ld_o='-out:$@'
3392         _flags_filter=msvc_flags
3393         _ld_lib='lib%.a'
3394         _ld_path='-libpath:'
3395     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3396         _type=cparser
3397         _ident=$($_cc --version | head -n1)
3398         _depflags='-MMD'
3399         _cflags_speed='-O4'
3400         _cflags_size='-O2'
3401         _flags_filter=cparser_flags
3402     fi
3403
3404     eval ${pfx}_type=\$_type
3405     eval ${pfx}_ident=\$_ident
3406 }
3407
3408 set_ccvars(){
3409     eval ${1}_C=\${_cc_c-\${${1}_C}}
3410     eval ${1}_E=\${_cc_e-\${${1}_E}}
3411     eval ${1}_O=\${_cc_o-\${${1}_O}}
3412
3413     if [ -n "$_depflags" ]; then
3414         eval ${1}_DEPFLAGS=\$_depflags
3415     else
3416         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3417         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3418         eval DEP${1}FLAGS=\$_flags
3419     fi
3420 }
3421
3422 probe_cc cc "$cc"
3423 cflags_filter=$_flags_filter
3424 cflags_speed=$_cflags_speed
3425 cflags_size=$_cflags_size
3426 cflags_noopt=$_cflags_noopt
3427 add_cflags $_flags $_cflags
3428 cc_ldflags=$_ldflags
3429 set_ccvars CC
3430
3431 probe_cc hostcc "$host_cc"
3432 host_cflags_filter=$_flags_filter
3433 host_cflags_speed=$_cflags_speed
3434 add_host_cflags  $_flags $_cflags
3435 set_ccvars HOSTCC
3436
3437 test -n "$cc_type" && enable $cc_type ||
3438     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3439
3440 : ${as_default:=$cc}
3441 : ${objcc_default:=$cc}
3442 : ${dep_cc_default:=$cc}
3443 : ${ld_default:=$cc}
3444 : ${host_ld_default:=$host_cc}
3445 set_default ar as objcc dep_cc ld host_ld
3446
3447 probe_cc as "$as"
3448 asflags_filter=$_flags_filter
3449 add_asflags $_flags $_cflags
3450 set_ccvars AS
3451
3452 probe_cc objcc "$objcc"
3453 objcflags_filter=$_flags_filter
3454 add_objcflags $_flags $_cflags
3455 set_ccvars OBJC
3456
3457 probe_cc ld "$ld"
3458 ldflags_filter=$_flags_filter
3459 add_ldflags $_flags $_ldflags
3460 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3461 LD_O=${_ld_o-$LD_O}
3462 LD_LIB=${_ld_lib-$LD_LIB}
3463 LD_PATH=${_ld_path-$LD_PATH}
3464
3465 probe_cc hostld "$host_ld"
3466 host_ldflags_filter=$_flags_filter
3467 add_host_ldflags $_flags $_ldflags
3468 HOSTLD_O=${_ld_o-$HOSTLD_O}
3469
3470 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3471     probe_cc depcc "$dep_cc"
3472     CCDEP=${_DEPCMD:-$DEPCMD}
3473     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3474     DEPCCFLAGS=$_flags
3475 fi
3476
3477 if $ar 2>&1 | grep -q Microsoft; then
3478     arflags="-nologo"
3479     ar_o='-out:$@'
3480 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3481     arflags="rq"
3482     ar_o='$@'
3483 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3484     arflags='-Xany -r -c'
3485     ar_o='$@'
3486 else
3487     arflags="rc"
3488     ar_o='$@'
3489 fi
3490
3491 add_cflags $extra_cflags
3492 add_objcflags $extra_objcflags
3493 add_asflags $extra_cflags
3494
3495 if test -n "$sysroot"; then
3496     case "$cc_type" in
3497         gcc|llvm_gcc|clang)
3498             add_cppflags --sysroot="$sysroot"
3499             add_ldflags --sysroot="$sysroot"
3500         ;;
3501         tms470)
3502             add_cppflags -I"$sysinclude"
3503             add_ldflags  --sysroot="$sysroot"
3504         ;;
3505     esac
3506 fi
3507
3508 if test "$cpu" = host; then
3509     enabled cross_compile &&
3510         die "--cpu=host makes no sense when cross-compiling."
3511
3512     case "$cc_type" in
3513         gcc|llvm_gcc)
3514             check_native(){
3515                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3516                 sed -n "/cc1.*$1=/{
3517                             s/.*$1=\\([^ ]*\\).*/\\1/
3518                             p
3519                             q
3520                         }" $TMPE
3521             }
3522             cpu=$(check_native -march || check_native -mcpu)
3523         ;;
3524     esac
3525
3526     test "${cpu:-host}" = host &&
3527         die "--cpu=host not supported with compiler $cc"
3528 fi
3529
3530 # Deal with common $arch aliases
3531 case "$arch" in
3532     aarch64|arm64)
3533         arch="aarch64"
3534     ;;
3535     arm*)
3536         arch="arm"
3537     ;;
3538     mips*|IP*)
3539         case "$arch" in
3540         *el)
3541             add_cppflags -EL
3542             add_ldflags -EL
3543         ;;
3544         *eb)
3545             add_cppflags -EB
3546             add_ldflags -EB
3547         ;;
3548         esac
3549         arch="mips"
3550     ;;
3551     parisc*|hppa*)
3552         arch="parisc"
3553     ;;
3554     "Power Macintosh"|ppc*|powerpc*)
3555         arch="ppc"
3556     ;;
3557     s390|s390x)
3558         arch="s390"
3559     ;;
3560     sh4|sh)
3561         arch="sh4"
3562     ;;
3563     sun4u|sparc*)
3564         arch="sparc"
3565     ;;
3566     tilegx|tile-gx)
3567         arch="tilegx"
3568     ;;
3569     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3570         arch="x86"
3571     ;;
3572 esac
3573
3574 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3575 enable $arch
3576
3577 # Add processor-specific flags
3578 if enabled aarch64; then
3579
3580     case $cpu in
3581         armv*)
3582             cpuflags="-march=$cpu"
3583         ;;
3584         *)
3585             cpuflags="-mcpu=$cpu"
3586         ;;
3587     esac
3588
3589 elif enabled alpha; then
3590
3591     cpuflags="-mcpu=$cpu"
3592
3593 elif enabled arm; then
3594
3595     check_arm_arch() {
3596         check_cpp_condition stddef.h \
3597             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3598             $cpuflags
3599     }
3600
3601     probe_arm_arch() {
3602         if   check_arm_arch 4;        then echo armv4
3603         elif check_arm_arch 4T;       then echo armv4t
3604         elif check_arm_arch 5;        then echo armv5
3605         elif check_arm_arch 5E;       then echo armv5e
3606         elif check_arm_arch 5T;       then echo armv5t
3607         elif check_arm_arch 5TE;      then echo armv5te
3608         elif check_arm_arch 5TEJ;     then echo armv5te
3609         elif check_arm_arch 6;        then echo armv6
3610         elif check_arm_arch 6J;       then echo armv6j
3611         elif check_arm_arch 6K;       then echo armv6k
3612         elif check_arm_arch 6Z;       then echo armv6z
3613         elif check_arm_arch 6ZK;      then echo armv6zk
3614         elif check_arm_arch 6T2;      then echo armv6t2
3615         elif check_arm_arch 7;        then echo armv7
3616         elif check_arm_arch 7A  7_A;  then echo armv7-a
3617         elif check_arm_arch 7S;       then echo armv7-a
3618         elif check_arm_arch 7R  7_R;  then echo armv7-r
3619         elif check_arm_arch 7M  7_M;  then echo armv7-m
3620         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3621         elif check_arm_arch 8A  8_A;  then echo armv8-a
3622         fi
3623     }
3624
3625     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3626
3627     case $cpu in
3628         armv*)
3629             cpuflags="-march=$cpu"
3630             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3631         ;;
3632         *)
3633             cpuflags="-mcpu=$cpu"
3634             case $cpu in
3635                 cortex-a*)                               subarch=armv7a  ;;
3636                 cortex-r*)                               subarch=armv7r  ;;
3637                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3638                 arm11*)                                  subarch=armv6   ;;
3639                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3640                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3641                 *)                             subarch=$(probe_arm_arch) ;;
3642             esac
3643         ;;
3644     esac
3645
3646     case "$subarch" in
3647         armv5t*)    enable fast_clz                ;;
3648         armv[6-8]*) enable fast_clz fast_unaligned ;;
3649     esac
3650
3651 elif enabled avr32; then
3652
3653     case $cpu in
3654         ap7[02]0[0-2])
3655             subarch="avr32_ap"
3656             cpuflags="-mpart=$cpu"
3657         ;;
3658         ap)
3659             subarch="avr32_ap"
3660             cpuflags="-march=$cpu"
3661         ;;
3662         uc3[ab]*)
3663             subarch="avr32_uc"
3664             cpuflags="-mcpu=$cpu"
3665         ;;
3666         uc)
3667             subarch="avr32_uc"
3668             cpuflags="-march=$cpu"
3669         ;;
3670     esac
3671
3672 elif enabled bfin; then
3673
3674     cpuflags="-mcpu=$cpu"
3675
3676 elif enabled mips; then
3677
3678     cpuflags="-march=$cpu"
3679
3680 elif enabled ppc; then
3681
3682     disable ldbrx
3683
3684     case $(tolower $cpu) in
3685         601|ppc601|powerpc601)
3686             cpuflags="-mcpu=601"
3687             disable altivec
3688         ;;
3689         603*|ppc603*|powerpc603*)
3690             cpuflags="-mcpu=603"
3691             disable altivec
3692         ;;
3693         604*|ppc604*|powerpc604*)
3694             cpuflags="-mcpu=604"
3695             disable altivec
3696         ;;
3697         g3|75*|ppc75*|powerpc75*)
3698             cpuflags="-mcpu=750"
3699             disable altivec
3700         ;;
3701         g4|745*|ppc745*|powerpc745*)
3702             cpuflags="-mcpu=7450"
3703             disable vsx
3704         ;;
3705         74*|ppc74*|powerpc74*)
3706             cpuflags="-mcpu=7400"
3707             disable vsx
3708         ;;
3709         g5|970|ppc970|powerpc970)
3710             cpuflags="-mcpu=970"
3711             disable vsx
3712         ;;
3713         power[3-6]*)
3714             cpuflags="-mcpu=$cpu"
3715             disable vsx
3716         ;;
3717         power[7-8]*)
3718             cpuflags="-mcpu=$cpu"
3719             enable ldbrx
3720         ;;
3721         cell)
3722             cpuflags="-mcpu=cell"
3723             enable ldbrx
3724             disable vsx
3725         ;;
3726         e500mc)
3727             cpuflags="-mcpu=e500mc"
3728             disable altivec
3729         ;;
3730         e500v2)
3731             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3732             disable altivec
3733             disable dcbzl
3734         ;;
3735         e500)
3736             cpuflags="-mcpu=8540 -mhard-float"
3737             disable altivec
3738             disable dcbzl
3739         ;;
3740     esac
3741
3742 elif enabled sparc; then
3743
3744     case $cpu in
3745         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3746             cpuflags="-mcpu=$cpu"
3747         ;;
3748         ultrasparc*|niagara[234])
3749             cpuflags="-mcpu=$cpu"
3750         ;;
3751     esac
3752
3753 elif enabled x86; then
3754
3755     case $cpu in
3756         i[345]86|pentium)
3757             cpuflags="-march=$cpu"
3758             disable i686
3759             disable mmx
3760         ;;
3761         # targets that do NOT support nopl and conditional mov (cmov)
3762         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3763             cpuflags="-march=$cpu"
3764             disable i686
3765         ;;
3766         # targets that do support nopl and conditional mov (cmov)
3767         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3768             cpuflags="-march=$cpu"
3769             enable i686
3770             enable fast_cmov
3771         ;;
3772         # targets that do support conditional mov but on which it's slow
3773         pentium4|pentium4m|prescott|nocona)
3774             cpuflags="-march=$cpu"
3775             enable i686
3776             disable fast_cmov
3777         ;;
3778     esac
3779
3780 fi
3781
3782 if [ "$cpu" != generic ]; then
3783     add_cflags  $cpuflags
3784     add_asflags $cpuflags
3785     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3786 fi
3787
3788 # compiler sanity check
3789 check_exec <<EOF
3790 int main(void){ return 0; }
3791 EOF
3792 if test "$?" != 0; then
3793     echo "$cc is unable to create an executable file."
3794     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3795         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3796         echo "Only do this if you know what cross compiling means."
3797     fi
3798     die "C compiler test failed."
3799 fi
3800
3801 add_cppflags -D_ISOC99_SOURCE
3802
3803 # some compilers silently accept -std=c11, so we also need to check that the
3804 # version macro is defined properly
3805 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3806     add_cflags -std=c11 ||
3807     check_cflags -std=c99
3808
3809 check_cppflags -D_FILE_OFFSET_BITS=64
3810 check_cppflags -D_LARGEFILE_SOURCE
3811
3812 add_host_cppflags -D_ISOC99_SOURCE
3813 check_host_cflags -std=c99
3814 check_host_cflags -Wall
3815 check_host_cflags $host_cflags_speed
3816
3817 check_64bit(){
3818     arch32=$1
3819     arch64=$2
3820     expr=$3
3821     check_code cc "" "int test[2*($expr) - 1]" &&
3822         subarch=$arch64 || subarch=$arch32
3823 }
3824
3825 case "$arch" in
3826     aarch64|alpha|ia64)
3827         spic=$shared
3828     ;;
3829     mips)
3830         check_64bit mips mips64 '_MIPS_SIM > 1'
3831         spic=$shared
3832     ;;
3833     parisc)
3834         check_64bit parisc parisc64 'sizeof(void *) > 4'
3835         spic=$shared
3836     ;;
3837     ppc)
3838         check_64bit ppc ppc64 'sizeof(void *) > 4'
3839         spic=$shared
3840     ;;
3841     s390)
3842         check_64bit s390 s390x 'sizeof(void *) > 4'
3843         spic=$shared
3844     ;;
3845     sparc)
3846         check_64bit sparc sparc64 'sizeof(void *) > 4'
3847         spic=$shared
3848     ;;
3849     x86)
3850         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3851         if test "$subarch" = "x86_64"; then
3852             spic=$shared
3853         fi
3854     ;;
3855 esac
3856
3857 enable $subarch
3858 enabled spic && enable_weak pic
3859
3860 enabled x86_64 && objformat=elf64 || objformat="elf32"
3861
3862 # OS specific
3863 case $target_os in
3864     aix)
3865         SHFLAGS=-shared
3866         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3867         enabled shared && add_ldflags -Wl,-brtl
3868         ;;
3869     android)
3870         disable symver
3871         enable section_data_rel_ro
3872         SLIB_INSTALL_NAME='$(SLIBNAME)'
3873         SLIB_INSTALL_LINKS=
3874         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3875         ;;
3876     haiku)
3877         prefix_default="/boot/common"
3878         network_extralibs="-lnetwork"
3879         host_extralibs=
3880         ;;
3881     sunos)
3882         SHFLAGS='-shared -Wl,-h,$$(@F)'
3883         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3884         network_extralibs="-lsocket -lnsl"
3885         # When using suncc to build, the Solaris linker will mark
3886         # an executable with each instruction set encountered by
3887         # the Solaris assembler.  As our libraries contain their own
3888         # guards for processor-specific code, instead suppress
3889         # generation of the HWCAPS ELF section on Solaris x86 only.
3890         enabled_all suncc x86 &&
3891             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3892             add_ldflags -Wl,-M,mapfile
3893         nm_default='nm -P -g'
3894         version_script='-M'
3895         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3896         ;;
3897     netbsd)
3898         disable symver
3899         oss_indev_extralibs="-lossaudio"
3900         ;;
3901     openbsd|bitrig)
3902         disable symver
3903         SHFLAGS='-shared'
3904         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3905         SLIB_INSTALL_LINKS=
3906         oss_indev_extralibs="-lossaudio"
3907         ;;
3908     dragonfly)
3909         disable symver
3910         ;;
3911     freebsd)
3912         ;;
3913     bsd/os)
3914         add_extralibs -lpoll -lgnugetopt
3915         ;;
3916     darwin)
3917         enabled ppc && add_asflags -force_cpusubtype_ALL
3918         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3919         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3920         add_ldflags -Wl,-dynamic,-search_paths_first
3921         check_cflags -Werror=partial-availability
3922         SLIBSUF=".dylib"
3923         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3924         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3925         enabled x86_64 && objformat="macho64" || objformat="macho32"
3926         enabled_any pic shared ||
3927             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3928         check_header dispatch/dispatch.h &&
3929             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3930         if test -n "$sysroot"; then
3931             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3932             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3933         fi
3934         ;;
3935     msys*)
3936         die "Native MSYS builds are discouraged, please use the MINGW environment."
3937         ;;
3938     mingw32*|mingw64*)
3939         target_os=mingw32
3940         LIBTARGET=i386
3941         if enabled x86_64; then
3942             LIBTARGET="i386:x86-64"
3943         fi
3944         if enabled shared; then
3945             # Cannot build both shared and static libs when using dllexport.
3946             disable static
3947         fi
3948         check_ldflags -Wl,--nxcompat
3949         check_ldflags -Wl,--dynamicbase
3950         shlibdir_default="$bindir_default"
3951         SLIBPREF=""
3952         SLIBSUF=".dll"
3953         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3954         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3955         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3956         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3957         SLIB_INSTALL_LINKS=
3958         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3959         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3960         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3961         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3962         enabled x86_64 && objformat="win64" || objformat="win32"
3963         dlltool="${cross_prefix}dlltool"
3964         ranlib=:
3965         enable dos_paths
3966         ;;
3967     win32|win64)
3968         disable symver
3969         if enabled shared; then
3970             # Link to the import library instead of the normal static library
3971             # for shared libs.
3972             LD_LIB='%.lib'
3973             # Cannot build both shared and static libs with MSVC or icl.
3974             disable static
3975         fi
3976         shlibdir_default="$bindir_default"
3977         SLIBPREF=""
3978         SLIBSUF=".dll"
3979         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3980         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3981         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3982         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3983         SLIB_INSTALL_LINKS=
3984         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3985         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3986         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3987         enabled x86_64 && objformat="win64" || objformat="win32"
3988         ranlib=:
3989         enable dos_paths
3990         ;;
3991     cygwin*)
3992         target_os=cygwin
3993         shlibdir_default="$bindir_default"
3994         SLIBPREF="cyg"
3995         SLIBSUF=".dll"
3996         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3997         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3998         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3999         SLIB_INSTALL_LINKS=
4000         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4001         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4002         enabled x86_64 && objformat="win64" || objformat="win32"
4003         enable dos_paths
4004         ;;
4005     *-dos|freedos|opendos)
4006         network_extralibs="-lsocket"
4007         objformat="coff"
4008         enable dos_paths
4009         add_cppflags -U__STRICT_ANSI__
4010         ;;
4011     linux)
4012         enable section_data_rel_ro
4013         ;;
4014     irix*)
4015         target_os=irix
4016         ranlib="echo ignoring ranlib"
4017         ;;
4018     os/2*)
4019         ln_s="cp -f"
4020         objformat="aout"
4021         add_cppflags -D_GNU_SOURCE
4022         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4023         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4024         LIBSUF="_s.a"
4025         SLIBPREF=""
4026         SLIBSUF=".dll"
4027         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4028         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4029         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4030             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4031             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4032             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4033             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4034         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4035             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4036         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4037         enable dos_paths
4038         ;;
4039     gnu/kfreebsd)
4040         add_cppflags -D_BSD_SOURCE
4041         ;;
4042     gnu)
4043         ;;
4044     qnx)
4045         add_cppflags -D_QNX_SOURCE
4046         network_extralibs="-lsocket"
4047         ;;
4048     symbian)
4049         SLIBSUF=".dll"
4050         enable dos_paths
4051         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4052         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4053         add_ldflags -Wl,--target1-abs,--no-undefined \
4054                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4055                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4056         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4057                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4058                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4059         ;;
4060     minix)
4061         ;;
4062     none)
4063         ;;
4064     *)
4065         die "Unknown OS '$target_os'."
4066         ;;
4067 esac
4068
4069 # determine libc flavour
4070
4071 probe_libc(){
4072     pfx=$1
4073     pfx_no_=${pfx%_}
4074     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4075     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4076         eval ${pfx}libc_type=uclibc
4077         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4078     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4079         eval ${pfx}libc_type=glibc
4080         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4081     # MinGW headers can be installed on Cygwin, so check for newlib first.
4082     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4083         eval ${pfx}libc_type=newlib
4084         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4085     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4086     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4087         eval ${pfx}libc_type=mingw64
4088         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4089         eval test \$${pfx_no_}cc_type = "gcc" &&
4090             add_${pfx}cppflags -D__printf__=__gnu_printf__
4091     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4092          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4093         eval ${pfx}libc_type=mingw32
4094         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4095             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4096             die "ERROR: MinGW32 runtime version must be >= 3.15."
4097         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4098         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4099             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4100         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4101             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4102         eval test \$${pfx_no_}cc_type = "gcc" &&
4103             add_${pfx}cppflags -D__printf__=__gnu_printf__
4104     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4105         eval ${pfx}libc_type=msvcrt
4106         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4107             if [ "$pfx" = host_ ]; then
4108                 add_host_cppflags -Dsnprintf=_snprintf
4109             else
4110                 add_compat strtod.o strtod=avpriv_strtod
4111                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4112                                              _snprintf=avpriv_snprintf  \
4113                                              vsnprintf=avpriv_vsnprintf
4114             fi
4115         fi
4116         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4117         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4118         # 0x601 by default unless something else is set by the user.
4119         # This can easily lead to us detecting functions only present
4120         # in such new versions and producing binaries requiring windows 7.0.
4121         # Therefore explicitly set the default to XP unless the user has
4122         # set something else on the command line.
4123         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4124         # family. For these cases, configure is free to use any functions
4125         # found in the SDK headers by default. (Alternatively, we could force
4126         # _WIN32_WINNT to 0x0602 in that case.)
4127         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4128             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4129 #ifdef WINAPI_FAMILY
4130 #include <winapifamily.h>
4131 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4132 #error not desktop
4133 #endif
4134 #endif
4135 EOF
4136         if [ "$pfx" = "" ]; then
4137             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4138         fi
4139     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4140         eval ${pfx}libc_type=klibc
4141     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4142         eval ${pfx}libc_type=bionic
4143     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4144         eval ${pfx}libc_type=solaris
4145         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4146     else
4147         eval ${pfx}libc_type=default
4148         add_${pfx}cppflags -D_DEFAULT_SOURCE
4149     fi
4150     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
4151 }
4152
4153 probe_libc
4154 probe_libc host_
4155
4156 # hacks for compiler/libc/os combinations
4157
4158 case $libc_type in
4159     bionic)
4160         add_compat strtod.o strtod=avpriv_strtod
4161         ;;
4162     glibc)
4163         if enabled tms470; then
4164             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4165             add_cppflags -D__USER_LABEL_PREFIX__=
4166             add_cppflags -D__builtin_memset=memset
4167             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4168             add_cflags   -pds=48    # incompatible redefinition of macro
4169         fi
4170         ;;
4171 esac
4172
4173 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4174     add_cppflags '-I\$(SRC_PATH)/compat/float'
4175
4176 esc(){
4177     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4178 }
4179
4180 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4181
4182 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4183
4184 set_default $PATHS_LIST
4185 set_default nm
4186
4187 # we need to build at least one lib type
4188 if ! enabled_any static shared; then
4189     cat <<EOF
4190 At least one library type must be built.
4191 Specify --enable-static to build the static libraries or --enable-shared to
4192 build the shared libraries as well. To only build the shared libraries specify
4193 --disable-static in addition to --enable-shared.
4194 EOF
4195     exit 1
4196 fi
4197
4198 disabled optimizations || check_cflags -fomit-frame-pointer
4199
4200 enable_weak_pic() {
4201     disabled pic && return
4202     enable pic
4203     add_cppflags -DPIC
4204     case "$target_os" in
4205     mingw*|cygwin*|win*)
4206         ;;
4207     *)
4208         add_cflags -fPIC
4209         add_asflags -fPIC
4210         ;;
4211     esac
4212 }
4213
4214 enabled pic && enable_weak_pic
4215
4216 check_cc <<EOF || die "Symbol mangling check failed."
4217 int ff_extern;
4218 EOF
4219 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4220 extern_prefix=${sym%%ff_extern*}
4221
4222 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4223
4224 _restrict=
4225 for restrict_keyword in restrict __restrict__ __restrict; do
4226     check_cc <<EOF && _restrict=$restrict_keyword && break
4227 void foo(char * $restrict_keyword p);
4228 EOF
4229 done
4230
4231 check_cc <<EOF && enable pragma_deprecated
4232 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4233 EOF
4234
4235 check_cc <<EOF || die "endian test failed"
4236 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4237 EOF
4238 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4239
4240 check_gas() {
4241     log "check_gas using '$as' as AS"
4242     # :vararg is used on aarch64, arm and ppc altivec
4243     check_as <<EOF || return 1
4244 .macro m n, y:vararg=0
4245 \n: .int \y
4246 .endm
4247 m x
4248 EOF
4249     # .altmacro is only used in arm asm
4250     ! enabled arm || check_as <<EOF || return 1
4251 .altmacro
4252 EOF
4253     enable gnu_as
4254     return 0
4255 }
4256
4257 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4258     nogas=:
4259     enabled_any arm aarch64 && nogas=die
4260     enabled_all ppc altivec && nogas=warn
4261     as_noop=-v
4262
4263     case $as_type in
4264         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4265         gcc)  gaspp_as_type=gas ;;
4266         *)    gaspp_as_type=$as_type ;;
4267     esac
4268
4269     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4270
4271     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4272         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4273
4274     if ! check_gas ; then
4275         as=${gas:=$as}
4276         check_gas || \
4277             $nogas "GNU assembler not found, install/update gas-preprocessor"
4278     fi
4279
4280     check_as <<EOF && enable as_func
4281 .func test
4282 .endfunc
4283 EOF
4284 fi
4285
4286 check_inline_asm inline_asm_labels '"1:\n"'
4287
4288 if enabled aarch64; then
4289     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4290     # internal assembler in clang 3.3 does not support this instruction
4291     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4292     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4293
4294     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4295
4296 elif enabled alpha; then
4297
4298     check_cflags -mieee
4299
4300 elif enabled arm; then
4301
4302     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4303     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4304     enabled thumb && check_cflags -mthumb || check_cflags -marm
4305
4306     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4307         enable vfp_args
4308     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4309         enable vfp_args
4310     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4311         case "${cross_prefix:-$cc}" in
4312             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4313             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4314 __asm__ (".eabi_attribute 28, 1");
4315 int main(void) { return 0; }
4316 EOF
4317         esac
4318         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4319     fi
4320
4321     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4322     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4323     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4324     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4325     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4326     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4327
4328     [ $target_os = linux ] || [ $target_os = android ] ||
4329         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4330             $ARCH_EXT_LIST_ARM
4331
4332     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4333
4334     check_as <<EOF && enable as_arch_directive
4335 .arch armv7-a
4336 EOF
4337     check_as <<EOF && enable as_fpu_directive
4338 .fpu neon
4339 EOF
4340
4341     # llvm's integrated assembler supports .object_arch from llvm 3.5
4342     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4343         check_as <<EOF && enable as_object_arch
4344 .object_arch armv4
4345 EOF
4346
4347     # MS armasm fails to assemble our PIC constructs
4348     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4349
4350 elif enabled mips; then
4351
4352     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4353
4354     # make sure that only an instruction set is enabled
4355     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4356
4357     if enabled mips64; then
4358         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4359             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4360                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4361     else
4362         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4363             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4364                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4365     fi
4366
4367 elif enabled parisc; then
4368
4369     if enabled gcc; then
4370         case $($cc -dumpversion) in
4371             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4372         esac
4373     fi
4374
4375 elif enabled ppc; then
4376
4377     enable local_aligned_8 local_aligned_16 local_aligned_32
4378
4379     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4380     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4381     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4382     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4383
4384     if enabled altivec; then
4385         check_cflags -maltivec -mabi=altivec
4386
4387         # check if our compiler supports Motorola AltiVec C API
4388         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4389                                  vector signed int v2 = (vector signed int) { 1 };
4390                                  v1 = vec_add(v1, v2);" ||
4391             disable altivec
4392
4393         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4394     fi
4395
4396     if enabled vsx; then
4397         check_cflags -mvsx &&
4398         check_code cc altivec.h "int v[4] = { 0 };
4399                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4400             disable vsx
4401     fi
4402
4403     if enabled power8; then
4404         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4405     fi
4406
4407 elif enabled x86; then
4408
4409     check_builtin rdtsc    intrin.h   "__rdtsc()"
4410     check_builtin mm_empty mmintrin.h "_mm_empty()"
4411
4412     enable local_aligned_8 local_aligned_16 local_aligned_32
4413
4414     # check whether EBP is available on x86
4415     # As 'i' is stored on the stack, this program will crash
4416     # if the base pointer is used to access it because the
4417     # base pointer is cleared in the inline assembly code.
4418     check_exec_crash <<EOF && enable ebp_available
4419 volatile int i=0;
4420 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4421 return i;
4422 EOF
4423
4424     # check whether EBX is available on x86
4425     check_inline_asm ebx_available '""::"b"(0)' &&
4426         check_inline_asm ebx_available '"":::"%ebx"'
4427
4428     # check whether xmm clobbers are supported
4429     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4430
4431     # check whether binutils is new enough to compile SSSE3/MMXEXT
4432     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4433     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4434
4435     probe_x86asm(){
4436         x86asmexe_probe=$1
4437         if check_cmd $x86asmexe_probe -v; then
4438             x86asmexe=$x86asmexe_probe
4439             x86asm_type=nasm
4440             x86asm_debug="-g -F dwarf"
4441             X86ASMDEP=
4442             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4443         elif check_cmd $x86asmexe_probe --version; then
4444             x86asmexe=$x86asmexe_probe
4445             x86asm_type=yasm
4446             x86asm_debug="-g dwarf2"
4447             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4448             X86ASM_DEPFLAGS=
4449         fi
4450         check_x86asm "movbe ecx, [5]" && enable x86asm
4451     }
4452
4453     if ! disabled_any asm mmx x86asm; then
4454         disable x86asm
4455         for program in $x86asmexe nasm yasm; do
4456             probe_x86asm $program && break
4457         done
4458         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4459         X86ASMFLAGS="-f $objformat"
4460         enabled pic               && append X86ASMFLAGS "-DPIC"
4461         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4462         case "$objformat" in
4463             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4464         esac
4465
4466         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4467         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4468         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4469         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4470         check_x86asm "CPU amdnop"                      || disable cpunop
4471     fi
4472
4473     case "$cpu" in
4474         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4475             disable fast_clz
4476         ;;
4477     esac
4478
4479 fi
4480
4481 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4482
4483 check_ldflags -Wl,--as-needed
4484
4485 if ! disabled network; then
4486     check_func getaddrinfo $network_extralibs
4487     check_func inet_aton $network_extralibs
4488
4489     check_type netdb.h "struct addrinfo"
4490     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4491     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4492     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4493     check_type poll.h "struct pollfd"
4494     check_type netinet/sctp.h "struct sctp_event_subscribe"
4495     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4496     check_type netinet/in.h "struct sockaddr_in6"
4497     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4498     check_type "sys/types.h sys/socket.h" socklen_t
4499
4500     # Prefer arpa/inet.h over winsock2
4501     if check_header arpa/inet.h ; then
4502         check_func closesocket
4503     elif check_header winsock2.h ; then
4504         check_func_headers winsock2.h closesocket -lws2 &&
4505             network_extralibs="-lws2" ||
4506         { check_func_headers winsock2.h closesocket -lws2_32 &&
4507             network_extralibs="-lws2_32"; } || disable winsock2_h network
4508         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4509
4510         check_type ws2tcpip.h socklen_t
4511         check_type ws2tcpip.h "struct addrinfo"
4512         check_type ws2tcpip.h "struct group_source_req"
4513         check_type ws2tcpip.h "struct ip_mreq_source"
4514         check_type ws2tcpip.h "struct ipv6_mreq"
4515         check_type winsock2.h "struct pollfd"
4516         check_struct winsock2.h "struct sockaddr" sa_len
4517         check_type ws2tcpip.h "struct sockaddr_in6"
4518         check_type ws2tcpip.h "struct sockaddr_storage"
4519     else
4520         disable network
4521     fi
4522 fi
4523
4524 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4525 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4526 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4527 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4528
4529 case "$custom_allocator" in
4530     jemalloc)
4531         # jemalloc by default does not use a prefix
4532         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4533     ;;
4534     tcmalloc)
4535         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4536         malloc_prefix=tc_
4537     ;;
4538 esac
4539
4540 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4541 check_func  ${malloc_prefix}memalign            && enable memalign
4542 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4543
4544 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4545     { check_lib clock_gettime time.h clock_gettime ||
4546       check_lib clock_gettime time.h clock_gettime -lrt; }
4547
4548 check_func  fcntl
4549 check_func  gethrtime
4550 check_func  getopt
4551 check_func  getrusage
4552 check_func  gettimeofday
4553 check_func  gmtime_r
4554 check_func  isatty
4555 check_func  localtime_r
4556 check_func  mkstemp
4557 check_func  mmap
4558 check_func  mprotect
4559 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4560 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4561 check_func  sched_getaffinity
4562 check_func  setrlimit
4563 check_func  strerror_r
4564 check_func  sysconf
4565 check_func  sysctl
4566 check_func  usleep
4567
4568 check_func_headers io.h setmode
4569 check_func_headers mach/mach_time.h mach_absolute_time
4570 check_func_headers stdlib.h getenv
4571
4572 check_func_headers windows.h GetProcessAffinityMask
4573 check_func_headers windows.h GetProcessTimes
4574 check_func_headers windows.h GetSystemTimeAsFileTime
4575 check_func_headers windows.h LoadLibrary
4576 check_func_headers windows.h MapViewOfFile
4577 check_func_headers windows.h SetConsoleTextAttribute
4578 check_func_headers windows.h Sleep
4579 check_func_headers windows.h VirtualAlloc
4580 check_struct windows.h "CONDITION_VARIABLE" Ptr
4581
4582 check_header direct.h
4583 check_header dxgidebug.h
4584 check_header dxva.h
4585 check_header dxva2api.h
4586 check_header io.h
4587 check_header malloc.h
4588 check_header poll.h
4589 check_header sys/param.h
4590 check_header sys/resource.h
4591 check_header sys/select.h
4592 check_header sys/time.h
4593 check_header sys/un.h
4594 check_header unistd.h
4595 check_header valgrind/valgrind.h
4596 check_header VideoDecodeAcceleration/VDADecoder.h
4597 check_header windows.h
4598
4599 # it seems there are versions of clang in some distros that try to use the
4600 # gcc headers, which explodes for stdatomic
4601 # so we also check that atomics actually work here
4602 check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4603
4604 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4605 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4606 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4607 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4608
4609 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4610
4611 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4612 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4613 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4614
4615 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4616 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4617 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4618
4619 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4620 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4621 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4622 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4623 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4624 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4625 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4626 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4627 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4628
4629 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4630
4631 if ! disabled w32threads && ! enabled pthreads; then
4632     check_lib w32threads "windows.h process.h" _beginthreadex
4633 fi
4634
4635 # check for some common methods of building with pthread support
4636 # do this before the optional library checks as some of them require pthreads
4637 if ! disabled pthreads && ! enabled w32threads; then
4638     if check_lib pthreads pthread.h pthread_join -pthread; then
4639         add_cflags -pthread
4640     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4641         add_cflags -pthreads
4642     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4643         :
4644     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4645         :
4646     elif check_func pthread_join; then
4647         enable pthreads
4648     fi
4649 fi
4650
4651 enabled pthreads &&
4652     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4653
4654 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4655 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4656
4657 # On some systems dynamic loading requires no extra linker flags
4658 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4659
4660 check_lib libm math.h sin -lm
4661
4662 atan2f_args=2
4663 ldexpf_args=2
4664 powf_args=2
4665
4666 for func in $MATH_FUNCS; do
4667     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4668 done
4669
4670 # these are off by default, so fail if requested and not available
4671 enabled avisynth          && require_header avisynth/avisynth_c.h
4672 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4673 enabled cuda              && require cuda cuda.h cuInit -lcuda
4674 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4675 enabled frei0r            && require_header frei0r.h
4676 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4677                              check_lib gmp gmp.h mpz_export -lgmp
4678 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4679 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4680 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4681 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4682 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4683 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4684 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4685 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4686 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4687 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4688 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4689 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4690 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4691 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4692 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4693 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4694 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4695 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4696 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4697                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4698 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4699 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4700 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4701 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4702 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4703 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4704 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4705 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4706 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4707 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4708 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4709 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4710                              { enabled libvpx_vp8_decoder &&
4711                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4712                                enabled libvpx_vp8_encoder &&
4713                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4714                                enabled libvpx_vp9_decoder &&
4715                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4716                                enabled libvpx_vp9_encoder &&
4717                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4718                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4719                                    die "libvpx enabled but no supported decoders/encoders found"
4720                              }
4721 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4722 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4723 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4724                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4725                              { check_cpp_condition x264.h "X264_MPEG2" &&
4726                                enable libx262; }
4727 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4728                              require_cpp_condition x265.h "X265_BUILD >= 57"
4729 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4730 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4731 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4732                                { ! enabled cross_compile &&
4733                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4734                                  add_ldflags -L/opt/vc/lib/ &&
4735                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4736                                die "ERROR: mmal not found" &&
4737                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4738 enabled nvenc             && require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4739 enabled omx               && require_header OMX_Core.h
4740 enabled omx_rpi           && { check_header OMX_Core.h ||
4741                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4742                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4743 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4744                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4745                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4746                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4747                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4748                                die "ERROR: openssl not found"; }
4749
4750 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4751 enabled avplay &&
4752     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4753
4754 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4755 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4756
4757 check_header linux/fb.h
4758 check_header linux/videodev2.h
4759 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4760
4761 check_header AVFoundation/AVFoundation.h
4762
4763 check_header sys/videoio.h
4764
4765 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4766 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4767 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4768 # w32api 3.12 had it defined wrong
4769 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4770
4771 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4772 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4773     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4774     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4775     check_header "dev/ic/bt8xx.h"
4776
4777 check_header sys/soundcard.h
4778
4779 enabled alsa_indev &&
4780     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4781
4782 enabled libjack &&
4783     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4784
4785 enabled sndio_indev && check_lib sndio sndio.h sio_open -lsndio
4786
4787 if enabled libcdio; then
4788     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4789     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4790     die "ERROR: No usable libcdio/cdparanoia found"
4791 fi
4792
4793 if enabled libxcb; then
4794     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4795     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4796     disabled libxcb_shm ||
4797         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4798     disabled libxcb_xfixes ||
4799         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4800 fi
4801
4802 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4803 # the desktop api partition
4804 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4805 #ifdef WINAPI_FAMILY
4806 #include <winapifamily.h>
4807 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4808 #error desktop, not uwp
4809 #else
4810 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4811 #endif
4812 #else
4813 #error no family set
4814 #endif
4815 EOF
4816
4817 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4818
4819 enabled vaapi &&
4820     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4821     disable vaapi
4822
4823 enabled vaapi &&
4824     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4825
4826 enabled vaapi &&
4827     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4828
4829 enabled vdpau &&
4830     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4831     disable vdpau
4832
4833 enabled vdpau &&
4834     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4835
4836 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4837
4838 # add some useful compiler flags if supported
4839 check_cflags -Wdeclaration-after-statement
4840 check_cflags -Wall
4841 check_cflags -Wdisabled-optimization
4842 check_cflags -Wpointer-arith
4843 check_cflags -Wredundant-decls
4844 check_cflags -Wwrite-strings
4845 check_cflags -Wtype-limits
4846 check_cflags -Wundef
4847 check_cflags -Wmissing-prototypes
4848 check_cflags -Wstrict-prototypes
4849
4850 if enabled extra_warnings; then
4851     check_cflags -Wcast-qual
4852     check_cflags -Wextra
4853     check_cflags -Wpedantic
4854 fi
4855
4856 check_disable_warning(){
4857     warning_flag=-W${1#-Wno-}
4858     test_cflags $warning_flag && add_cflags $1
4859 }